Removes confusing/unnecessary section on generating code.

examples/cpp/README.md

@@ -23,21 +23,6 @@ Change your current directory to examples/cpp/helloworld
 $ cd examples/cpp/helloworld/
 ```
 
-
-### Generating gRPC code
-
-To generate the client and server side interfaces:
-
-```sh
-$ make helloworld.grpc.pb.cc helloworld.pb.cc
-```
-Which internally invokes the proto-compiler as:
-
-```sh
-$ protoc -I ../../protos/ --grpc_out=. --plugin=protoc-gen-grpc=grpc_cpp_plugin ../../protos/helloworld.proto
-$ protoc -I ../../protos/ --cpp_out=. ../../protos/helloworld.proto
-```
-
 ### Client and server implementations
 
 The client implementation is at [greeter_client.cc](helloworld/greeter_client.cc).