delete old zabbix

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@25219 52c4871e-980c-0410-b1e0-e73912ce01f8
add zabbix LTS 2.2.7

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@25220 52c4871e-980c-0410-b1e0-e73912ce01f8
Update

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@25221 52c4871e-980c-0410-b1e0-e73912ce01f8
Update

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@25222 52c4871e-980c-0410-b1e0-e73912ce01f8