Views should not have third_party/wtl/include as an include directory on non-Windows builds.

Review URL: https://codereview.chromium.org/449923004

Cr-Commit-Position: refs/heads/master@{#288263}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288263 0039d316-1c4b-4281-b951-d872f2087c98

ui/views/views.gyp

@@ -591,9 +591,6 @@
       'sources': [
         '<@(views_sources)',
       ],
-      'include_dirs': [
-        '../../third_party/wtl/include',
-      ],
       'conditions': [
         ['use_ash==0', {
           'sources!': [