microblaze: Simplify copy_thread()

Removing nr parameter from copy_tread function
commit 6f2c55b8Signed-off-by: Michal Simek <monstr@monstr.eu>

arch/microblaze/kernel/process.c

@@ -115,8 +115,7 @@ void flush_thread(void)
 {
 }
 
-/* FIXME - here will be a proposed change -> remove nr parameter */
-int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
+int copy_thread(unsigned long clone_flags, unsigned long usp,
 		unsigned long unused,
 		struct task_struct *p, struct pt_regs *regs)
 {