Removal of unused extensions in LibGL

Change-Id: Ic10fd509442ea5aca03bddfea9a9c60ca9b6e8ad
Reviewed-on: https://swiftshader-review.googlesource.com/3716
Reviewed-by: Maxime Grégoire <mgregoire@google.com>
Tested-by: Maxime Grégoire <mgregoire@google.com>
1 file changed