[MIPS] Avoid duplicate do_syscall_trace calls on return from sigreturn.

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/kernel/irixsig.c

@@ -279,8 +279,6 @@ irix_sigreturn(struct pt_regs *regs)
 	/*
 	 * Don't let your children do this ...
 	 */
-	if (current_thread_info()->flags & TIF_SYSCALL_TRACE)
-		do_syscall_trace(regs, 1);
 	__asm__ __volatile__(
 		"move\t$29,%0\n\t"
 		"j\tsyscall_exit"
@@ -783,8 +781,6 @@ asmlinkage void irix_setcontext(struct pt_regs *regs)
 	/*
 	 * Don't let your children do this ...
 	 */
-	if (current_thread_info()->flags & TIF_SYSCALL_TRACE)
-		do_syscall_trace(regs, 1);
 	__asm__ __volatile__(
 		"move\t$29,%0\n\t"
 		"j\tsyscall_exit"

arch/mips/kernel/signal.c

@@ -220,8 +220,6 @@ _sys_sigreturn(nabi_no_regargs struct pt_regs regs)
 	/*
 	 * Don't let your children do this ...
 	 */
-	if (current_thread_info()->flags & TIF_SYSCALL_TRACE)
-		do_syscall_trace(&regs, 1);
 	__asm__ __volatile__(
 		"move\t$29, %0\n\t"
 		"j\tsyscall_exit"

arch/mips/kernel/signal32.c

@@ -497,8 +497,6 @@ _sys32_sigreturn(nabi_no_regargs struct pt_regs regs)
 	/*
 	 * Don't let your children do this ...
 	 */
-	if (current_thread_info()->flags & TIF_SYSCALL_TRACE)
-		do_syscall_trace(&regs, 1);
 	__asm__ __volatile__(
 		"move\t$29, %0\n\t"
 		"j\tsyscall_exit"