Merge pull request #11054 from apolcyn/ruby_dont_use_timeouts

src/ruby/end2end/channel_closing_driver.rb

src/ruby/end2end/channel_state_driver.rb

src/ruby/end2end/grpc_class_init_client.rb

src/ruby/end2end/grpc_class_init_driver.rb

src/ruby/end2end/sig_int_during_channel_watch_client.rb

src/ruby/end2end/sig_int_during_channel_watch_driver.rb

src/ruby/ext/grpc/rb_channel.c

src/ruby/ext/grpc/rb_event_thread.c

src/ruby/ext/grpc/rb_grpc.c

src/ruby/spec/channel_connection_spec.rb