NotifyResolver: Remove todo that is already addressed

The todo has been resolved by change I677def138.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I43280367efed0cda63246cafaa3b106b86f1145b
diff --git a/java/com/google/gerrit/server/change/NotifyResolver.java b/java/com/google/gerrit/server/change/NotifyResolver.java
index 724ef48..5b15684 100644
--- a/java/com/google/gerrit/server/change/NotifyResolver.java
+++ b/java/com/google/gerrit/server/change/NotifyResolver.java
@@ -59,7 +59,6 @@
 
     public abstract NotifyHandling handling();
 
-    // TODO(dborowitz): Should be ImmutableSetMultimap.
     public abstract ImmutableSetMultimap<RecipientType, Account.Id> accounts();
 
     public Result withHandling(NotifyHandling notifyHandling) {