[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, 56 deletions

diff --git a/vendor/google.golang.org/appengine/internal/net.go b/vendor/google.golang.org/appengine/internal/net.go
deleted file mode 100644
index fe429720e..000000000
--- a/vendor/google.golang.org/appengine/internal/net.go
+++ /dev/null
@@ -1,56 +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 implements a network dialer that limits the number of concurrent connections.
-// It is only used for API calls.
-
-import (
-	"log"
-	"net"
-	"runtime"
-	"sync"
-	"time"
-)
-
-var limitSem = make(chan int, 100) // TODO(dsymonds): Use environment variable.
-
-func limitRelease() {
-	// non-blocking
-	select {
-	case <-limitSem:
-	default:
-		// This should not normally happen.
-		log.Print("appengine: unbalanced limitSem release!")
-	}
-}
-
-func limitDial(network, addr string) (net.Conn, error) {
-	limitSem <- 1
-
-	// Dial with a timeout in case the API host is MIA.
-	// The connection should normally be very fast.
-	conn, err := net.DialTimeout(network, addr, 10*time.Second)
-	if err != nil {
-		limitRelease()
-		return nil, err
-	}
-	lc := &limitConn{Conn: conn}
-	runtime.SetFinalizer(lc, (*limitConn).Close) // shouldn't usually be required
-	return lc, nil
-}
-
-type limitConn struct {
-	close sync.Once
-	net.Conn
-}
-
-func (lc *limitConn) Close() error {
-	defer lc.close.Do(func() {
-		limitRelease()
-		runtime.SetFinalizer(lc, nil)
-	})
-	return lc.Conn.Close()
-}