Remove repository validity tests, effectively making it mandatory

debexpo/importer/models.py

@@ -237,9 +237,7 @@ class Importer():
             finally:
                 changes.remove()
 
-        if self.repository:
         self.repository.update()
-
         self.spool.cleanup()
 
         return success
@@ -411,7 +409,6 @@ class Importer():
             git_ref = git_storage.install(source)
 
         # Install to repository
-        if self.repository:
         self.repository.install(changes)
 
         # Create DB entries