trace_syscalls: Remove unused event_syscall_enter and event_syscall_exit

fix event_enter_##sname->event
fix event_exit_##sname->event

remove unused event_syscall_enter and event_syscall_exit

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Jason Baron <jbaron@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4B14D278.4090209@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index b50974a..2f7c539 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -178,7 +178,7 @@
 	  event_enter_##sname = {					\
 		.name                   = "sys_enter"#sname,		\
 		.system                 = "syscalls",			\
-		.event                  = &event_syscall_enter,		\
+		.event                  = &enter_syscall_print_##sname,	\
 		.raw_init		= init_enter_##sname,		\
 		.show_format		= syscall_enter_format,		\
 		.define_fields		= syscall_enter_define_fields,	\
@@ -214,7 +214,7 @@
 	  event_exit_##sname = {					\
 		.name                   = "sys_exit"#sname,		\
 		.system                 = "syscalls",			\
-		.event                  = &event_syscall_exit,		\
+		.event                  = &exit_syscall_print_##sname,	\
 		.raw_init		= init_exit_##sname,		\
 		.show_format		= syscall_exit_format,		\
 		.define_fields		= syscall_exit_define_fields,	\