[chore]: Bump golang.org/x/oauth2 from 0.18.0 to 0.19.0 (#2816)

Bumps [golang.org/x/oauth2](https://github.com/golang/oauth2) from 0.18.0 to 0.19.0.
- [Commits](https://github.com/golang/oauth2/compare/v0.18.0...v0.19.0)

---
updated-dependencies:
- dependency-name: golang.org/x/oauth2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

1 files changed, 0 insertions, 60 deletions

diff --git a/vendor/google.golang.org/appengine/internal/metadata.go b/vendor/google.golang.org/appengine/internal/metadata.go
deleted file mode 100644
index c4ba63bb4..000000000
--- a/vendor/google.golang.org/appengine/internal/metadata.go
+++ /dev/null
@@ -1,60 +0,0 @@
-// Copyright 2014 Google Inc. All rights reserved.
-// Use of this source code is governed by the Apache 2.0
-// license that can be found in the LICENSE file.
-
-package internal
-
-// This file has code for accessing metadata.
-//
-// References:
-//	https://cloud.google.com/compute/docs/metadata
-
-import (
-	"fmt"
-	"io/ioutil"
-	"net/http"
-	"net/url"
-)
-
-const (
-	metadataHost = "metadata"
-	metadataPath = "/computeMetadata/v1/"
-)
-
-var (
-	metadataRequestHeaders = http.Header{
-		"Metadata-Flavor": []string{"Google"},
-	}
-)
-
-// TODO(dsymonds): Do we need to support default values, like Python?
-func mustGetMetadata(key string) []byte {
-	b, err := getMetadata(key)
-	if err != nil {
-		panic(fmt.Sprintf("Metadata fetch failed for '%s': %v", key, err))
-	}
-	return b
-}
-
-func getMetadata(key string) ([]byte, error) {
-	// TODO(dsymonds): May need to use url.Parse to support keys with query args.
-	req := &http.Request{
-		Method: "GET",
-		URL: &url.URL{
-			Scheme: "http",
-			Host:   metadataHost,
-			Path:   metadataPath + key,
-		},
-		Header: metadataRequestHeaders,
-		Host:   metadataHost,
-	}
-	resp, err := http.DefaultClient.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	defer resp.Body.Close()
-	if resp.StatusCode != 200 {
-		return nil, fmt.Errorf("metadata server returned HTTP %d", resp.StatusCode)
-	}
-	return ioutil.ReadAll(resp.Body)
-}