dri: don't touch the shader compiler
dri: don't touch the shader compiler

This function is for deleting per-screen resources, and the shader
compiler resources are not of such nature. Besides, dri shouldn't
need to even know about the presence of a shader compiler.

These resources will already be released when mesa gets unloaded,
and that should be sufficient.

Signed-off-by: Erik Faye-Lund <2a8ffc07e8f57d80a2934ccc3dd1949354d82b2d@gmail.com>
Reviewed-by: Matt Turner <789b315743a28dd066a4ba1459c35951c291d8a6@gmail.com>
Reviewed-by: Brian Paul <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@vmware.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler