1 files changed, 0 insertions, 3 deletions
diff --git a/synapse/metrics/metric.py b/synapse/metrics/metric.py
index 920cde1dd0..e87b2b80a7 100644
--- a/synapse/metrics/metric.py
+++ b/synapse/metrics/metric.py
@@ -83,9 +83,6 @@ class CounterMetric(BaseMetric):
     def render(self):
         return map_concat(self.render_item, sorted(self.counts.keys()))
 
-    def unregister_counter(self, *values):
-        self.counts.pop(values, None)
-
 
 class CallbackMetric(BaseMetric):
     """A metric that returns the numeric value returned by a callback whenever