m68k: Resetting sa_handler in local copy of k_sigaction is pointless

... and had been such since the introduction of get_signal_to_deliver()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

arch/m68k/kernel/signal.c

@@ -1006,9 +1006,6 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
 	else
 		setup_frame(sig, ka, oldset, regs);
 
-	if (ka->sa.sa_flags & SA_ONESHOT)
-		ka->sa.sa_handler = SIG_DFL;
-
 	sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
 	if (!(ka->sa.sa_flags & SA_NODEFER))
 		sigaddset(&current->blocked,sig);