Merge pull request #15416 from vdemeester/lint-remove-pkgsystemd

Remove pkg/systemd from validate-lint

hack/make/validate-lint

@@ -77,7 +77,6 @@ packages=(
 	pkg/stringid
 	pkg/stringutils
 	pkg/sysinfo
-	pkg/systemd
 	pkg/symlink
 	pkg/tailfile
 	pkg/tarsum