kbuild: buildtar: Remove unused $dirs

The shell variable $dirs is not used any more since 1fc90958
("kbuild: tar-pkg: use tar rules in scripts/Makefile.package"),
therefore remove it".

Fixes: 1fc90958 ("kbuild: tar-pkg: use tar rules in scripts/Makefile.package")
Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/package/buildtar

@@ -23,7 +23,6 @@ tmpdir=$1
 #
 rm -rf -- "${tmpdir}"
 mkdir -p -- "${tmpdir}/boot"
-dirs=boot
 
 
 #
@@ -42,7 +41,6 @@ fi
 #
 if grep -q '^CONFIG_MODULES=y' include/config/auto.conf; then
 	make ARCH="${ARCH}" -f ${srctree}/Makefile INSTALL_MOD_PATH="${tmpdir}" modules_install
-	dirs="$dirs lib"
 fi