kbuild: do not put .scmversion into the source tarball

.scmversion is used by (src)rpm-pkg and deb-pkg to carry KERNELRELEASE.

In fact, deb-pkg does not rely on it any more because the generated
debian/rules specifies KERNELRELEASE from the command line.

Do likwise for (src)rpm-pkg, and remove this feature.
For the same reason, you do not need to save LOCALVERSION in the
spec file.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>

scripts/setlocalversion

@@ -11,16 +11,11 @@
 #
 
 usage() {
-	echo "Usage: $0 [--save-scmversion] [srctree]" >&2
+	echo "Usage: $0 [srctree]" >&2
 	exit 1
 }
 
-scm_only=false
 srctree=.
-if test "$1" = "--save-scmversion"; then
-	scm_only=true
-	shift
-fi
 if test $# -gt 0; then
 	srctree=$1
 	shift
@@ -35,10 +30,6 @@ scm_version()
 	short=false
 
 	cd "$srctree"
-	if test -e .scmversion; then
-		cat .scmversion
-		return
-	fi
 	if test "$1" = "--short"; then
 		short=true
 	fi
@@ -103,14 +94,6 @@ collect_files()
 	echo "$res"
 }
 
-if $scm_only; then
-	if test ! -e .scmversion; then
-		res=$(scm_version)
-		echo "$res" >.scmversion
-	fi
-	exit
-fi
-
 if ! test -e include/config/auto.conf; then
 	echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
 	exit 1