Allow mailing lists to be permanently deleted
Summary: Allow PhabricatorMetaMTAMailingList to be permanently deleted with ./bin/remove destroy.
Test Plan:
./bin/remove destroy PHID-MLST-nseux3r55escj573shsf IMPORTANT: OBJECTS WILL BE PERMANENTLY DESTROYED! There is no way to undo this operation or ever retrieve this data. These 1 object(s) will be completely destroyed forever: - PHID-MLST-nseux3r55escj573shsf (PhabricatorMetaMTAMailingList) Are you absolutely certain you want to destroy these 1 object(s)? [y/N] y Destroying objects... Destroying PhabricatorMetaMTAMailingList PHID-MLST-nseux3r55escj573shsf... Permanently destroyed 1 object(s).
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D9979