Remove the 2nd RecvProto in the generated code for client streaming

server.go

@@ -43,10 +43,10 @@ import (
 	"sync"
 
 	"github.com/golang/protobuf/proto"
+	"golang.org/x/net/context"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/transport"
-	"golang.org/x/net/context"
 )
 
 type methodHandler func(srv interface{}, ctx context.Context, buf []byte) (proto.Message, error)
@@ -57,14 +57,6 @@ type MethodDesc struct {
 	Handler    methodHandler
 }
 
-type streamHandler func(srv interface{}, stream ServerStream) error
-
-// StreamDesc represents a streaming RPC service's method specification.
-type StreamDesc struct {
-	StreamName string
-	Handler    streamHandler
-}
-
 // ServiceDesc represents an RPC service's specification.
 type ServiceDesc struct {
 	ServiceName string