Revert "Add support for EGL on linux"

src/gpu/gl/egl/GrGLCreateNativeInterface_egl.cpp

-
-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#include "gl/GrGLInterface.h"
-#include "gl/GrGLAssembleInterface.h"
-#include "gl/GrGLUtil.h"
-
-#include <EGL/egl.h>
-#include <GLES2/gl2.h>
-
-static GrGLFuncPtr egl_get_gl_proc(void* ctx, const char name[]) {
-    SkASSERT(NULL == ctx);
-    return eglGetProcAddress(name);
-}
-
-const GrGLInterface* GrGLCreateNativeInterface() {
-    return GrGLAssembleInterface(NULL, egl_get_gl_proc);
-}