Remove unused tests folder.

This is now located in src/ and Chromium no longer refers to it.

BUG=None

Change-Id: I64fd302629ca28aa367d8714bfbac2657774fc3b
Reviewed-on: https://chromium-review.googlesource.com/262920
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

tests/angle_end2end_tests.gypi

@@ -1,12 +0,0 @@
-# Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# TODO(jmadill): update Chromium's pointers to src/tests
-
-{
-    'includes':
-    [
-        '../src/tests/angle_end2end_tests.gypi',
-    ],
-}

tests/angle_tests/ANGLETest.h

@@ -1,9 +0,0 @@
-//
-// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-
-// TODO(jmadill): Remove this file once we're ready on the Chromium side.
-
-#include "../../src/tests/end2end_tests/ANGLETest.h"

tests/angle_unittests.gypi

@@ -1,12 +0,0 @@
-# Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# TODO(jmadill): update Chromium's pointers to src/tests
-
-{
-    'includes':
-    [
-        '../src/tests/angle_unittests.gypi',
-    ],
-}