windows: Remove DirectX SDK from search paths for include files and library files.

Chrome and its dependencies no longer need D3DX so the Windows Platform SDK is sufficient.

WebRTC still needs the directx_sdk_path gyp variable so that is not deleted.

Review URL: https://chromiumcodereview.appspot.com/11877003

git-svn-id: http://src.chromium.org/svn/trunk/src/build@176585 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

common.gypi

@@ -3731,7 +3731,6 @@
           '<(windows_sdk_path)/Include/shared',
           '<(windows_sdk_path)/Include/um',
           '<(windows_sdk_path)/Include/winrt',
-          '<(directx_sdk_path)/Include',
           '$(VSInstallDir)/VC/atlmfc/include',
         ],
         'msvs_cygwin_dirs': ['<(DEPTH)/third_party/cygwin'],
@@ -3763,7 +3762,6 @@
           'VCLibrarianTool': {
             'AdditionalOptions': ['/ignore:4221'],
             'AdditionalLibraryDirectories': [
-              '<(directx_sdk_path)/Lib/x86',
               '<(windows_sdk_path)/Lib/win8/um/x86',
             ],
           },
@@ -3795,7 +3793,6 @@
               }],
             ],
             'AdditionalLibraryDirectories': [
-              '<(directx_sdk_path)/Lib/x86',
               '<(windows_sdk_path)/Lib/win8/um/x86',
             ],
             'GenerateDebugInformation': 'true',