Update hook_civicrm_permission to use new format
See https://github.com/civicrm/civicrm-core/pull/29173
Also removes residual hook that hasn't been needed since 4.2.alpha according to d7ad3a4c.
See https://github.com/civicrm/civicrm-core/pull/29173
Also removes residual hook that hasn't been needed since 4.2.alpha according to d7ad3a4c.