Remove clang extension

It's only needed for using the static keyword. Since you removed those, clover builds it fine without it. Also removed the check since Mesa is considered IS_GENERIC now.

include/kernel_vendor.h

@@ -7,10 +7,6 @@
 #pragma OPENCL EXTENSION cl_khr_byte_addressable_store : enable
 #endif
 
-#ifdef cl_clang_storage_class_specifiers
-#pragma OPENCL EXTENSION cl_clang_storage_class_specifiers : enable
-#endif
-
 /**
  * vendor specific
  */
@@ -28,11 +24,9 @@
  */
 
 #ifdef IS_AMD
-#ifndef cl_clang_storage_class_specifiers
 #pragma OPENCL EXTENSION cl_amd_media_ops  : enable
 #pragma OPENCL EXTENSION cl_amd_media_ops2 : enable
 #endif
-#endif
 
 /**
  * NV specific