[Mojo] Remove dependency between mojo/public and gpu

mojo/mojo_public.gypi

Index: mojo/mojo_public.gypi
diff --git a/mojo/mojo_public.gypi b/mojo/mojo_public.gypi
index 924894996fdf0c70a45a9fb7d46635f0b7042abf..bc5e011e592cbde011f135ce3ee25dc7b9fbd906 100644
--- a/mojo/mojo_public.gypi
+++ b/mojo/mojo_public.gypi
@@ -139,20 +139,5 @@
         'public/bindings/js/test/run_js_tests.cc',
       ],
     },
-    {
-      'target_name': 'gles2_client_impl',
-      'type': 'static_library',
-      'dependencies': [
-        '../gpu/gpu.gyp:gles2_c_lib',
-        'gles2',
-      ],
-      'export_dependent_settings': [
-        'gles2',
-      ],
-      'sources': [
-        'public/bindings/gles2_client/gles2_client_impl.cc',
-        'public/bindings/gles2_client/gles2_client_impl.h',
-      ],
-    },
   ],
 }