arm64: extable: remove unsed ex_handler_t definition

From: Jisheng Zhang <[email protected]>

The type ex_handler_t is defined but not used, remove it.

---
 arch/arm64/mm/extable.c | 3 ---
 1 file changed, 3 deletions(-)

index c3d53811a15e..c0181e60cc98 100644
@@ -10,9 +10,6 @@
 #include <asm/asm-extable.h>
 #include <asm/ptrace.h>
 
-typedef bool (*ex_handler_t)(const struct exception_table_entry *,
-			     struct pt_regs *);
-
 static inline unsigned long
 get_ex_fixup(const struct exception_table_entry *ex)
 {

2.33.0

It's probably worth saying:

| The ex_handler_t type was introduced in commit:
|
|   d6e2cc5647753825 ("arm64: extable: add `type` and `data` fields")
| 
| ... but has never been used, and is unnecessary. Remove it.

... as this was a leftover from a prior version of that patch, and in the form merged in mainline it was redundant becuase we moved to using an enumerated type rather than a function pointer in the ex_table_entry.

With or without the wording above:

Thanks,
Mark.