unexport access_process_vm

This patch removes the no longer used EXPORT_SYMBOL_GPL(access_process_vm).
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

mm/memory.c

@@ -2748,4 +2748,3 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in
 
 	return buf - old_buf;
 }
-EXPORT_SYMBOL_GPL(access_process_vm);