diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py
index 98333b2048..59900aa5d1 100644
--- a/synapse/metrics/__init__.py
+++ b/synapse/metrics/__init__.py
@@ -107,8 +107,6 @@ class InFlightGauge(object):
             will update.
     """
 
-    # TODO: Expand this to
-
     def __init__(self, name, desc, labels, sub_metrics):
         self.name = name
         self.desc = desc