x86: remove leftover unwind annotations

Impact: cleanup

These got left in needlessly when ret_from_fork got simplified.
Signed-off-by: NJan Beulich <jbeulich@novell.com>
LKML-Reference: <49B8F355.76E4.0078.0@novell.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/entry_64.S

@@ -416,7 +416,6 @@ ENTRY(ret_from_fork)
 
 	GET_THREAD_INFO(%rcx)
 
-	CFI_REMEMBER_STATE
 	RESTORE_REST
 
 	testl $3, CS-ARGOFFSET(%rsp)		# from kernel_thread?
@@ -428,7 +427,6 @@ ENTRY(ret_from_fork)
 	RESTORE_TOP_OF_STACK %rdi, -ARGOFFSET
 	jmp ret_from_sys_call			# go to the SYSRET fastpath
 
-	CFI_RESTORE_STATE
 	CFI_ENDPROC
 END(ret_from_fork)