[PATCH -next] x86/ftrace: Remove unsued extern declaration ftrace_regs_caller_ret()

[YueHaibing]

This is now unused, so can remove it.

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 arch/x86/kernel/ftrace.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 01e8f34daf22..12df54ff0e81 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -282,7 +282,6 @@ static inline void tramp_free(void *tramp) { }
 
 /* Defined as markers to the end of the ftrace default trampolines */
 extern void ftrace_regs_caller_end(void);
-extern void ftrace_regs_caller_ret(void);
 extern void ftrace_caller_end(void);
 extern void ftrace_caller_op_ptr(void);
 extern void ftrace_regs_caller_op_ptr(void);
-- 
2.34.1