Revert "Vendor Update"

This reverts commit c2f07f2e95.

vendor/google.golang.org/grpc/codes/code_string.go

@@ -1,62 +0,0 @@
-/*
- *
- * Copyright 2017 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-package codes
-
-import "strconv"
-
-func (c Code) String() string {
-	switch c {
-	case OK:
-		return "OK"
-	case Canceled:
-		return "Canceled"
-	case Unknown:
-		return "Unknown"
-	case InvalidArgument:
-		return "InvalidArgument"
-	case DeadlineExceeded:
-		return "DeadlineExceeded"
-	case NotFound:
-		return "NotFound"
-	case AlreadyExists:
-		return "AlreadyExists"
-	case PermissionDenied:
-		return "PermissionDenied"
-	case ResourceExhausted:
-		return "ResourceExhausted"
-	case FailedPrecondition:
-		return "FailedPrecondition"
-	case Aborted:
-		return "Aborted"
-	case OutOfRange:
-		return "OutOfRange"
-	case Unimplemented:
-		return "Unimplemented"
-	case Internal:
-		return "Internal"
-	case Unavailable:
-		return "Unavailable"
-	case DataLoss:
-		return "DataLoss"
-	case Unauthenticated:
-		return "Unauthenticated"
-	default:
-		return "Code(" + strconv.FormatInt(int64(c), 10) + ")"
-	}
-}