x86: ia32_signal.c remove unnecessary function calls

the below 2 functions are called in save_i387_xstate_ia32()
- clear_used_math();
- stts();
Signed-off-by: NHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/ia32/ia32_signal.c

@@ -370,12 +370,9 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
 	tmp = save_i387_xstate_ia32(fpstate);
 	if (tmp < 0)
 		err = -EFAULT;
-	else {
-		clear_used_math();
-		stts();
+	else
 		err |= __put_user(ptr_to_compat(tmp ? fpstate : NULL),
 					&sc->fpstate);
-	}
 
 	/* non-iBCS2 extensions.. */
 	err |= __put_user(mask, &sc->oldmask);