Fixed before_destroy callback

remove_file_uploads should be called both with and w/o
the flag - we need to decide which way to use on instance level.

app/models/concerns/with_uploads.rb

@@ -31,7 +31,7 @@ module WithUploads
 
     # TODO: when feature flag is removed, we can use just dependent: destroy
     # option on :file_uploads
-    before_destroy :remove_file_uploads, unless: :fast_destroy_enabled?
+    before_destroy :remove_file_uploads
 
     use_fast_destroy :file_uploads, if: :fast_destroy_enabled?
   end