Revert of Fix errors found in Mac gn component builds

gpu/command_buffer_service.gypi

Index: gpu/command_buffer_service.gypi
diff --git a/gpu/command_buffer_service.gypi b/gpu/command_buffer_service.gypi
index 953ddd24c4390e6a9fb7e3ef12895ca584919a79..95a0aa2c4292e059ec58c9242f578111f1df78ca 100644
--- a/gpu/command_buffer_service.gypi
+++ b/gpu/command_buffer_service.gypi
@@ -142,15 +142,6 @@
         '../third_party/khronos',
       ],
     }],
-    ['OS=="mac"', {
-      # Required by gles2_cmd_decoder.cc on Mac.
-      'link_settings': {
-        'libraries': [
-          '$(SDKROOT)/System/Library/Frameworks/IOSurface.framework',
-          '$(SDKROOT)/System/Library/Frameworks/OpenGL.framework',
-        ],
-      },
-    }],
     ['OS in ("win", "android") or (OS == "linux" and use_x11 == 1)', {
       'sources': [
         'command_buffer/service/async_pixel_transfer_manager_egl.cc',