Remove non-chromium code from TestWebKitAPI

Tools/TestWebKitAPI/Configurations/DebugRelease.xcconfig

-// Copyright (C) 2010 Apple Inc. All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions
-// are met:
-// 1. Redistributions of source code must retain the above copyright
-//    notice, this list of conditions and the following disclaimer.
-// 2. Redistributions in binary form must reproduce the above copyright
-//    notice, this list of conditions and the following disclaimer in the
-//    documentation and/or other materials provided with the distribution.
-//
-// THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
-// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
-// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
-// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
-
-#include "Base.xcconfig"
-
-ARCHS = $(ARCHS_STANDARD_32_64_BIT);
-
-ONLY_ACTIVE_ARCH = YES;
-
-MACOSX_DEPLOYMENT_TARGET = $(MACOSX_DEPLOYMENT_TARGET_$(TARGET_MAC_OS_X_VERSION_MAJOR))
-MACOSX_DEPLOYMENT_TARGET_1070 = 10.7;
-MACOSX_DEPLOYMENT_TARGET_1080 = 10.8;
-MACOSX_DEPLOYMENT_TARGET_1090 = 10.9;
-
-WEBKIT_UMBRELLA_FRAMEWORKS_DIR = $(BUILT_PRODUCTS_DIR);