switch from godep to glide

vendor/github.com/grpc-ecosystem/grpc-gateway/runtime/internal/stream_chunk.proto

@@ -1,12 +0,0 @@
-syntax = "proto3";
-package grpc.gateway.runtime;
-option go_package = "internal";
-
-// StreamError is a response type which is returned when
-// streaming rpc returns an error.
-message StreamError {
-	int32 grpc_code = 1;
-	int32 http_code = 2;
-	string message = 3;
-	string http_status = 4;
-}