Eliminated some redundant checks in the Node interop client

src/node/interop/interop_client.js

@@ -69,9 +69,6 @@ function zeroBuffer(size) {
 function emptyUnary(client, done) {
   var call = client.emptyCall({}, function(err, resp) {
     assert.ifError(err);
-  });
-  call.on('status', function(status) {
-    assert.strictEqual(status.code, grpc.status.OK);
     if (done) {
       done();
     }
@@ -96,9 +93,6 @@ function largeUnary(client, done) {
     assert.ifError(err);
     assert.strictEqual(resp.payload.type, 'COMPRESSABLE');
     assert.strictEqual(resp.payload.body.length, 314159);
-  });
-  call.on('status', function(status) {
-    assert.strictEqual(status.code, grpc.status.OK);
     if (done) {
       done();
     }
@@ -115,9 +109,6 @@ function clientStreaming(client, done) {
   var call = client.streamingInputCall(function(err, resp) {
     assert.ifError(err);
     assert.strictEqual(resp.aggregated_payload_size, 74922);
-  });
-  call.on('status', function(status) {
-    assert.strictEqual(status.code, grpc.status.OK);
     if (done) {
       done();
     }
@@ -308,9 +299,6 @@ function authTest(expected_user, scope, client, done) {
       assert.strictEqual(resp.payload.body.length, 314159);
       assert.strictEqual(resp.username, expected_user);
       assert.strictEqual(resp.oauth_scope, AUTH_SCOPE_RESPONSE);
-    });
-    call.on('status', function(status) {
-      assert.strictEqual(status.code, grpc.status.OK);
       if (done) {
         done();
       }
@@ -344,9 +332,6 @@ function oauth2Test(expected_user, scope, per_rpc, client, done) {
           assert.ifError(err);
           assert.strictEqual(resp.username, expected_user);
           assert.strictEqual(resp.oauth_scope, AUTH_SCOPE_RESPONSE);
-        });
-        call.on('status', function(status) {
-          assert.strictEqual(status.code, grpc.status.OK);
           if (done) {
             done();
           }
@@ -358,7 +343,6 @@ function oauth2Test(expected_user, scope, per_rpc, client, done) {
         client.updateMetadata = updateMetadata;
         makeTestCall(null, {});
       }
-
     });
   });
 }