Remove couple of unused fields in the resolver wrapper. (#3070)
Remove couple of unused fields in the resolver wrapper. (#3070)


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