go.mod: switch to modules for dependency management

Godep is long deprecated and modules is the future.
Updating dependencies with godep is painful and non-transparent.
This will hopefully help to create custom golangci-lint linters.
The change was created with:

go mod init
rm -rf vendor
go mod vendor

Fixes #1247

1 files changed, 0 insertions, 40 deletions

diff --git a/vendor/github.com/googleapis/gax-go/header.go b/vendor/github.com/googleapis/gax-go/header.go
deleted file mode 100644
index e1a0af1ba..000000000
--- a/vendor/github.com/googleapis/gax-go/header.go
+++ /dev/null
@@ -1,40 +0,0 @@
-// Copyright 2018, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package gax
-
-import v2 "github.com/googleapis/gax-go/v2"
-
-// XGoogHeader is for use by the Google Cloud Libraries only.
-//
-// XGoogHeader formats key-value pairs.
-// The resulting string is suitable for x-goog-api-client header.
-func XGoogHeader(keyval ...string) string {
-	return v2.XGoogHeader(keyval...)
-}