diff --git a/src/ruby/lib/grpc.rb b/src/ruby/lib/grpc.rb
index dd02ef7666a8d1875931860e19c444882ac40dc2..b0f68035cd6d8dae0653333ac51c98ddaf8c9ee9 100644
--- a/src/ruby/lib/grpc.rb
+++ b/src/ruby/lib/grpc.rb
@@ -31,7 +31,6 @@ require 'grpc/errors'
 require 'grpc/grpc'
 require 'grpc/logconfig'
 require 'grpc/version'
-require 'grpc/core/event'
 require 'grpc/core/time_consts'
 require 'grpc/generic/active_call'
 require 'grpc/generic/client_stub'
diff --git a/src/ruby/lib/grpc/core/event.rb b/src/ruby/lib/grpc/core/event.rb
deleted file mode 100644
index 194aa8ecac93026d5dbffe31c159ccefbbb2a690..0000000000000000000000000000000000000000
--- a/src/ruby/lib/grpc/core/event.rb
+++ /dev/null
@@ -1,44 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-require 'grpc'
-
-# GRPC contains the General RPC module.
-module GRPC
-  module Core
-    # Event is a class defined in the c extension
-    #
-    # Here, we add an inspect method.
-    class Event
-      def inspect
-        "<#{self.class}: type:#{type}, tag:#{tag} result:#{result}>"
-      end
-    end
-  end
-end
diff --git a/src/ruby/spec/alloc_spec.rb b/src/ruby/spec/alloc_spec.rb
deleted file mode 100644
index 88e7e2b3e7ac10441f5cad7af6fe28c888449da1..0000000000000000000000000000000000000000
--- a/src/ruby/spec/alloc_spec.rb
+++ /dev/null
@@ -1,44 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-require 'grpc'
-
-describe 'Wrapped classes where .new cannot create an instance' do
-  describe GRPC::Core::Event do
-    it 'should fail .new fail with a runtime error' do
-      expect { GRPC::Core::Event.new }.to raise_error(TypeError)
-    end
-  end
-
-  describe GRPC::Core::Call do
-    it 'should fail .new fail with a runtime error' do
-      expect { GRPC::Core::Event.new }.to raise_error(TypeError)
-    end
-  end
-end
diff --git a/src/ruby/spec/byte_buffer_spec.rb b/src/ruby/spec/byte_buffer_spec.rb
deleted file mode 100644
index e1833ebb3a0b479da1bae75f4aa8378cc282fb1a..0000000000000000000000000000000000000000
--- a/src/ruby/spec/byte_buffer_spec.rb
+++ /dev/null
@@ -1,67 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-require 'grpc'
-
-describe GRPC::Core::ByteBuffer do
-  describe '#new' do
-    it 'is constructed from a string' do
-      expect { GRPC::Core::ByteBuffer.new('#new') }.not_to raise_error
-    end
-
-    it 'can be constructed from the empty string' do
-      expect { GRPC::Core::ByteBuffer.new('') }.not_to raise_error
-    end
-
-    it 'cannot be constructed from nil' do
-      expect { GRPC::Core::ByteBuffer.new(nil) }.to raise_error TypeError
-    end
-
-    it 'cannot be constructed from non-strings' do
-      [1, Object.new, :a_symbol].each do |x|
-        expect { GRPC::Core::ByteBuffer.new(x) }.to raise_error TypeError
-      end
-    end
-  end
-
-  describe '#to_s' do
-    it 'is the string value the ByteBuffer was constructed with' do
-      expect(GRPC::Core::ByteBuffer.new('#to_s').to_s).to eq('#to_s')
-    end
-  end
-
-  describe '#dup' do
-    it 'makes an instance whose #to_s is the original string value' do
-      bb = GRPC::Core::ByteBuffer.new('#dup')
-      a_copy = bb.dup
-      expect(a_copy.to_s).to eq('#dup')
-      expect(a_copy.dup.to_s).to eq('#dup')
-    end
-  end
-end
diff --git a/src/ruby/spec/call_spec.rb b/src/ruby/spec/call_spec.rb
index 1f67cbac6ef91f75e924cbe1ed9a22280f934467..4977c10a7e183fcd692b652c507454546967682a 100644
--- a/src/ruby/spec/call_spec.rb
+++ b/src/ruby/spec/call_spec.rb
@@ -96,16 +96,6 @@ describe GRPC::Core::Call do
     @ch = GRPC::Core::Channel.new(fake_host, nil)
   end
 
-  describe '#add_metadata' do
-    it 'adds metadata to a call without fail' do
-      call = make_test_call
-      n = 37
-      one_md = proc { |x| [sprintf('key%d', x), sprintf('value%d', x)] }
-      metadata = Hash[n.times.collect { |i| one_md.call i }]
-      expect { call.add_metadata(metadata) }.to_not raise_error
-    end
-  end
-
   describe '#status' do
     it 'can save the status and read it back' do
       call = make_test_call
diff --git a/src/ruby/spec/event_spec.rb b/src/ruby/spec/event_spec.rb
deleted file mode 100644
index 7d92fcd792870c07c937a6213f780f01d2b89cb2..0000000000000000000000000000000000000000
--- a/src/ruby/spec/event_spec.rb
+++ /dev/null
@@ -1,53 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-require 'grpc'
-
-describe GRPC::Core::CompletionType do
-  before(:each) do
-    @known_types = {
-      QUEUE_SHUTDOWN: 0,
-      OP_COMPLETE: 1,
-      READ: 2,
-      WRITE_ACCEPTED: 3,
-      FINISH_ACCEPTED: 4,
-      CLIENT_METADATA_READ: 5,
-      FINISHED: 6,
-      SERVER_RPC_NEW: 7,
-      SERVER_SHUTDOWN: 8,
-      RESERVED: 9
-    }
-  end
-
-  it 'should have all the known types' do
-    mod = GRPC::Core::CompletionType
-    blk = proc { Hash[mod.constants.collect { |c| [c, mod.const_get(c)] }] }
-    expect(blk.call).to eq(@known_types)
-  end
-end
diff --git a/src/ruby/spec/metadata_spec.rb b/src/ruby/spec/metadata_spec.rb
deleted file mode 100644
index 247286669210b5f1c56b172574e04f5aa658bd76..0000000000000000000000000000000000000000
--- a/src/ruby/spec/metadata_spec.rb
+++ /dev/null
@@ -1,64 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-require 'grpc'
-
-describe GRPC::Core::Metadata do
-  describe '#new' do
-    it 'should create instances' do
-      expect { GRPC::Core::Metadata.new('a key', 'a value') }.to_not raise_error
-    end
-  end
-
-  describe '#key' do
-    md = GRPC::Core::Metadata.new('a key', 'a value')
-    it 'should be the constructor value' do
-      expect(md.key).to eq('a key')
-    end
-  end
-
-  describe '#value' do
-    md = GRPC::Core::Metadata.new('a key', 'a value')
-    it 'should be the constuctor value' do
-      expect(md.value).to eq('a value')
-    end
-  end
-
-  describe '#dup' do
-    it 'should create a copy that returns the correct key' do
-      md = GRPC::Core::Metadata.new('a key', 'a value')
-      expect(md.dup.key).to eq('a key')
-    end
-
-    it 'should create a copy that returns the correct value' do
-      md = GRPC::Core::Metadata.new('a key', 'a value')
-      expect(md.dup.value).to eq('a value')
-    end
-  end
-end