cleanup: remove unused channel ready (#2353)
cleanup: remove unused channel ready (#2353)


menghanl/grpc-go,thinkerou/grpc-go,grpc/grpc-go,menghanl/grpc-go,dfawley/grpc-go,stanley-cheung/grpc-go,grpc/grpc-go,stanley-cheung/grpc-go,dfawley/grpc-go,thinkerou/grpc-go