Revert "deployment: try workaround to solve annoying replication issue"

This reverts commit 2c859c9940caa2599b6eb71f7a1d8832064a6133.

This doesn't fix the issue (as you might guess I know the
real source of the problem now, ha!)

From: Michael Prokop <mprokop@sipwise.com>

deployment.sh

@@ -870,10 +870,6 @@ EOF
 if "$RETRIEVE_MGMT_CONFIG" ; then
   echo "Retrieving /etc/hosts configuration from management server"
   wget --timeout=30 -O "$TARGET/etc/hosts" "${MANAGEMENT_IP}:3000/hostconfig/$(cat ${TARGET}/etc/hostname)"
-
-  echo "# replication workaround"        >> $TARGET/etc/hosts
-  echo "127.0.0.1 $HOSTNAME"             >> $TARGET/etc/hosts
-  echo "# end of replication workaround" >> $TARGET/etc/hosts
 fi
 
 if "$PRO_EDITION" ; then