Remove `HomeServer.get_datastore()` (#12031)

The presence of this method was confusing, and mostly present for backwards
compatibility. Let's get rid of it.

Part of #11733

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/rest/admin/test_background_updates.py b/tests/rest/admin/test_background_updates.py

index 1e3fe9c62c..fb36aa9940 100644
--- a/tests/rest/admin/test_background_updates.py
+++ b/tests/rest/admin/test_background_updates.py
@@ -36,7 +36,7 @@ class BackgroundUpdatesTestCase(unittest.HomeserverTestCase):
     ]
 
     def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
-        self.store = hs.get_datastore()
+        self.store = hs.get_datastores().main
         self.admin_user = self.register_user("admin", "pass", admin=True)
         self.admin_user_tok = self.login("admin", "pass")