localDCE: Remove can_delete check entirely
localDCE: Remove can_delete check entirely

Summary: After {D4397080} and {D4393135} I think it's no longer necessary

Reviewed By: AsyncDBConnMarkedDownDBException

Differential Revision: D4429336

fbshipit-source-id: 1942ede951d2da7f490d7be501b690cae04ce94c

facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex,facebook/redex