--- zzzz-none-000/linux-3.10.107/include/trace/events/syscalls.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/trace/events/syscalls.h	2021-02-04 17:41:59.000000000 +0000
@@ -14,9 +14,6 @@
 
 #ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
 
-extern void syscall_regfunc(void);
-extern void syscall_unregfunc(void);
-
 TRACE_EVENT_FN(sys_enter,
 
 	TP_PROTO(struct pt_regs *regs, long id),