[PATCH] err.h: remove deprecated PTR_RET for good

[Lukas Bulwahn <lukas.bulwahn@gmail.com>]

Initially, commit fa9ee9c4b988 ("include/linux/err.h: add a function to
cast error-pointers to a return value") from Uwe Kleine-König introduced
PTR_RET in 03/2011. Then, in 07/2013, commit 6e8b8726ad50 ("PTR_RET is
now PTR_ERR_OR_ZERO") from Rusty Russell renamed PTR_RET to
PTR_ERR_OR_ZERO, and left PTR_RET as deprecated-marked alias.

After six years since the renaming and various repeated cleanups in the
meantime, it is time to finally remove the deprecated PTR_RET for good.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
---
Rusty, if you are still around, Acked-by is appreciated.
Uwe, Acked-by is appreciated.
Kudos to Gustavo, Nicholas, Duan & Sachin for previous cleanups.

applies cleanly on current master and on next-20200320
Jiri, please pick this trival patch for the next merge window. Thanks.

 include/linux/err.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/include/linux/err.h b/include/linux/err.h
index 87be24350e91..a139c64aef2a 100644
--- a/include/linux/err.h
+++ b/include/linux/err.h
@@ -62,9 +62,6 @@ static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
 		return 0;
 }
 
-/* Deprecated */
-#define PTR_RET(p) PTR_ERR_OR_ZERO(p)
-
 #endif
 
 #endif /* _LINUX_ERR_H */
-- 
2.17.1