cascade delete on a User should include Pulses.

src/metabase/models/user.clj

@@ -49,6 +49,7 @@
     (cascade-delete 'Session :user_id id)
     (cascade-delete 'Dashboard :creator_id id)
     (cascade-delete 'Card :creator_id id)
+    (cascade-delete 'Pulse :creator_id)
     (cascade-delete 'Activity :user_id id)
     (cascade-delete 'ViewLog :user_id id)))