Removed unused setting

Ignore-this: a9379394ca4ad1caf0e098ac64dce8d4

darcs-hash:20100916170949-58252-6a404493fbac1807dd45a0aff98d2c52c54e6b4e
Don't keep old transformations if updated rule's action is not 'allow'

Ignore-this: d7e3b9721c98f080f5cae95c9b26627

If OMA support is detected then transformation elements are not allowed
for rules whose action is not 'allow'.

darcs-hash:20100908182113-56b4d-b51534968b1ed853f78243da34d10e8258072a2c