kbuild: remove KBUILD_ENABLE_EXTRA_GCC_CHECKS support

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@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>

diff --git a/Makefile b/Makefile
index 7cd80ff2d69b17c160c6ec3af189af7572bc7dc8..3428e46300695f4c4bf39a40acdad55b4b8bdc5f 100644 (file)
--- 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