Remove third_party/golang.org/x/mobile as it is no longer used with Go 1.5.

third_party/go/src/golang.org/x/mobile/bind/java/testpkg/testpkg.go

Index: third_party/go/src/golang.org/x/mobile/bind/java/testpkg/testpkg.go
diff --git a/third_party/go/src/golang.org/x/mobile/bind/java/testpkg/testpkg.go b/third_party/go/src/golang.org/x/mobile/bind/java/testpkg/testpkg.go
deleted file mode 100644
index c4bde1b3bb10ff9dde263341ce8015750732ae62..0000000000000000000000000000000000000000
--- a/third_party/go/src/golang.org/x/mobile/bind/java/testpkg/testpkg.go
+++ /dev/null
@@ -1,116 +0,0 @@
-// Package testpkg contains bound functions for testing the cgo-JNI interface.
-package testpkg
-
-//go:generate gobind -lang=go -output=go_testpkg/go_testpkg.go .
-//go:generate gobind -lang=java -output=Testpkg.java .
-import (
-	"errors"
-	"fmt"
-	"runtime"
-	"time"
-)
-
-type I interface {
-	F()
-
-	E() error
-	V() int
-	VE() (int, error)
-	I() I
-	S() *S
-
-	String() string
-}
-
-func CallF(i I) {
-	i.F()
-}
-
-func CallE(i I) error {
-	return i.E()
-}
-
-func CallV(i I) int {
-	return i.V()
-}
-
-func CallVE(i I) (int, error) {
-	return i.VE()
-}
-
-func CallI(i I) I {
-	return i
-}
-
-func CallS(i I) *S {
-	return &S{}
-}
-
-var keep []I
-
-func Keep(i I) {
-	keep = append(keep, i)
-}
-
-var numSCollected int
-
-type S struct {
-	// *S already has a finalizer, so we need another object
-	// to count successful collections.
-	innerObj *int
-
-	name string
-}
-
-func (s *S) F() {
-	fmt.Printf("called F on *S{%s}\n", s.name)
-}
-
-func (s *S) String() string {
-	return s.name
-}
-
-func finalizeInner(*int) {
-	numSCollected++
-}
-
-func New() *S {
-	s := &S{innerObj: new(int), name: "new"}
-	runtime.SetFinalizer(s.innerObj, finalizeInner)
-	return s
-}
-
-func GC() {
-	runtime.GC()
-	time.Sleep(10 * time.Millisecond)
-	runtime.GC()
-}
-
-func Add(x, y int) int {
-	return x + y
-}
-
-func NumSCollected() int {
-	return numSCollected
-}
-
-func StrDup(s string) string {
-	return s
-}
-
-func Err(s string) error {
-	if s != "" {
-		return errors.New(s)
-	}
-	return nil
-}
-
-func BytesAppend(a []byte, b []byte) []byte {
-	return append(a, b...)
-}
-
-func AppendToString(str string, someBytes []byte) []byte {
-	a := []byte(str)
-	fmt.Printf("str=%q (len=%d), someBytes=%v (len=%d)\n", str, len(str), someBytes, len(someBytes))
-	return append(a, someBytes...)
-}