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/app/stdio_android.go

Index: third_party/go/src/golang.org/x/mobile/app/stdio_android.go
diff --git a/third_party/go/src/golang.org/x/mobile/app/stdio_android.go b/third_party/go/src/golang.org/x/mobile/app/stdio_android.go
deleted file mode 100644
index 662840334e1fcc745280828cd58e150fc9578d5f..0000000000000000000000000000000000000000
--- a/third_party/go/src/golang.org/x/mobile/app/stdio_android.go
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package app
-
-// Android redirects stdout and stderr to /dev/null.
-// As these are common debugging utilities in Go,
-// we redirect them to logcat.
-//
-// Unfortunately, logcat is line oriented, so we must buffer.
-
-/*
-#cgo LDFLAGS: -llog
-#include <android/log.h>
-#include <string.h>
-*/
-import "C"
-
-import (
-	"bufio"
-	"log"
-	"os"
-	"unsafe"
-)
-
-var (
-	ctag    = C.CString("GoStdio")
-	ctagLog = C.CString("GoLog")
-)
-
-type infoWriter struct{}
-
-func (infoWriter) Write(p []byte) (n int, err error) {
-	cstr := C.CString(string(p))
-	C.__android_log_write(C.ANDROID_LOG_INFO, ctagLog, cstr)
-	C.free(unsafe.Pointer(cstr))
-	return len(p), nil
-}
-
-func lineLog(f *os.File, priority C.int) {
-	const logSize = 1024 // matches android/log.h.
-	r := bufio.NewReaderSize(f, logSize)
-	for {
-		line, _, err := r.ReadLine()
-		str := string(line)
-		if err != nil {
-			str += " " + err.Error()
-		}
-		cstr := C.CString(str)
-		C.__android_log_write(priority, ctag, cstr)
-		C.free(unsafe.Pointer(cstr))
-		if err != nil {
-			break
-		}
-	}
-}
-
-func init() {
-	log.SetOutput(infoWriter{})
-	// android logcat includes all of log.LstdFlags
-	log.SetFlags(log.Flags() &^ log.LstdFlags)
-
-	r, w, err := os.Pipe()
-	if err != nil {
-		panic(err)
-	}
-	os.Stderr = w
-	go lineLog(r, C.ANDROID_LOG_ERROR)
-
-	r, w, err = os.Pipe()
-	if err != nil {
-		panic(err)
-	}
-	os.Stdout = w
-	go lineLog(r, C.ANDROID_LOG_INFO)
-}