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-rw-r--r--synapse/storage/stats.py5
1 files changed, 1 insertions, 4 deletions
diff --git a/synapse/storage/stats.py b/synapse/storage/stats.py
index 6832ec6b7f..f86e9bd269 100644
--- a/synapse/storage/stats.py
+++ b/synapse/storage/stats.py
@@ -15,13 +15,10 @@
 # limitations under the License.
 
 import logging
-from threading import Lock
-
-from twisted.internet import defer
 from itertools import chain
+from threading import Lock
 
 from synapse.storage.state_deltas import StateDeltasStore
-from synapse.storage.state_deltas import StateDeltasStore
 from synapse.util.caches.descriptors import cached
 
 logger = logging.getLogger(__name__)