[PATCH] kbuild: remove KBUILD_ENABLE_EXTRA_GCC_CHECKS support

[Masahiro Yamada]

Commit e27128db6283 ("kbuild: rename KBUILD_ENABLE_EXTRA_GCC_CHECKS to
KBUILD_EXTRA_WARN") renamed KBUILD_ENABLE_EXTRA_GCC_CHECKS in 2019.
The migration in downstream code should be complete.

Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
---

 Makefile | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/Makefile b/Makefile
index 96407c1d6be1..3c1b012a156f 100644
--- a/Makefile
+++ b/Makefile
@@ -151,9 +151,6 @@ endif
 
 export KBUILD_EXTMOD
 
-# backward compatibility
-KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)
-
 ifeq ("$(origin W)", "command line")
   KBUILD_EXTRA_WARN := $(W)
 endif
-- 
2.43.0