[PARISC] remove old timerfd syscall

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

arch/parisc/kernel/syscall_table.S

@@ -401,7 +401,7 @@
 	ENTRY_COMP(kexec_load)		/* 300 */
 	ENTRY_COMP(utimensat)
 	ENTRY_COMP(signalfd)
-	ENTRY_COMP(timerfd)
+	ENTRY_SAME(ni_syscall)		/* was timerfd */
 	ENTRY_SAME(eventfd)
 	ENTRY_COMP(fallocate)		/* 305 */