mediacheck: drop firmware/udev as well

These aren't needed in this subprofile but can sneak in
via e.g. SYSTEM_PACKAGES.

features.in/mediacheck/mediacheck/image-scripts.d/99-cleanup-all

@@ -5,4 +5,5 @@ rpm -e --nodeps apt libapt rpm librpmbuild librpm 2>/dev/null ||:
 rm -rf /var/lib/apt /var/cache/apt /var/lib/rpm
 rm -rf /lib/modules
 rm -rf /usr/share
-rm -rf /usr/lib*/{locale,perl*,python*}
+rm -rf /usr/lib*/{locale,perl*,python*,systemd,udev}
+rm -rf /{etc,lib}/{firmware,udev}