Properly restrict the external part removal to the deleted collection. (cherry picked from commit 263967034b533b92eddeec62d1d94e0e8b1e3540)
Properly restrict the external part removal to the deleted collection.
(cherry picked from commit 263967034b533b92eddeec62d1d94e0e8b1e3540)

kolab-groupware/akonadi,kolab-groupware/akonadi,kolab-groupware/akonadi,kolab-groupware/akonadi