Remove all .gyp and .gypi files.

build/release.gypi

-{
-  'conditions': [
-    # Handle build types.
-    ['buildtype=="Dev"', {
-      'includes': ['internal/release_impl.gypi'],
-    }],
-    ['buildtype=="Dev" and incremental_chrome_dll==1', {
-      'msvs_settings': {
-        'VCLinkerTool': {
-          # Enable incremental linking and disable conflicting link options:
-          # http://msdn.microsoft.com/en-us/library/4khtbfyf.aspx
-          'LinkIncremental': '2',
-          'OptimizeReferences': '1',
-          'EnableCOMDATFolding': '1',
-          'Profile': 'false',
-        },
-      },
-    }],
-    ['buildtype=="Official"', {
-      'includes': ['internal/release_impl_official.gypi'],
-    }],
-    # TODO(bradnelson): may also need:
-    #     checksenabled
-    #     coverage
-    #     dom_stats
-    #     pgo_instrument
-    #     pgo_optimize
-  ],
-}