EDAC, edac_stub: Drop arch-specific include

<asm/edac.h> contains only the arch-specific scrubbing function and is
thus not needed in edac_stub.c. Kill it.
Signed-off-by: Borislav Petkov <bp@suse.de>

drivers/edac/edac_stub.c

@@ -16,7 +16,6 @@
 #include <linux/edac.h>
 #include <linux/atomic.h>
 #include <linux/device.h>
-#include <asm/edac.h>
 
 int edac_op_state = EDAC_OPSTATE_INVAL;
 EXPORT_SYMBOL_GPL(edac_op_state);