Âbase-files: don't mark /etc/banner as conffile

SVN-Revision: 24742

package/base-files/files/lib/upgrade/keep.d/base-files-essential

@@ -1,5 +1,4 @@
 # Essential files that will be always kept
-/etc/banner
 /etc/hosts
 /etc/inittab
 /etc/group