Revert "GRMLBASE/98-clean-chroot: get rid of /etc/mtab"

This reverts commit d08e5220bdb647ace920fa78170d18829061cb59.
This sadly doesn't solve http://bts.grml.org/grml/issue1136

diff --git a/etc/grml/fai/config/scripts/GRMLBASE/98-clean-chroot b/etc/grml/fai/config/scripts/GRMLBASE/98-clean-chroot
index 435f129..1a736ee 100755 (executable)
--- a/etc/grml/fai/config/scripts/GRMLBASE/98-clean-chroot
+++ b/etc/grml/fai/config/scripts/GRMLBASE/98-clean-chroot
@@ -100,14 +100,6 @@ rm -rf --one-file-system $target/etc/sysconfig/* \
        $target/var/lib/mysql $target/var/log/lilo_log.* $target/core* \
        $target/etc/blkid.tab
 
-# avoid data leakage into target system
-if ! [ -f "$target/etc/mtab" ]; then
-  echo "/etc/mtab does not exist or is not a regular file, not touching."
-else
-  echo "Removing /etc/mtab"
-  rm -f "$target/etc/mtab"
-fi
-
 # remove only "temporary" or saved files in the given directories
 nuke(){
   for i in $(find "$@" -name \*.gz -o -name \*.bz2 -o -name \*.0 2>/dev/null); do