Remove previously released replication changes from 3.3 release notes

Change-Id: I134d51dbde1655b0e02523809762680fdc32acac
diff --git a/pages/site/releases/3.3.md b/pages/site/releases/3.3.md
index 4574ee4..18a96d5 100644
--- a/pages/site/releases/3.3.md
+++ b/pages/site/releases/3.3.md
@@ -226,29 +226,6 @@
 
   **NOTE**: The multi-primary replication is still experimental.
 
-* [Issue 11760](https://bugs.chromium.org/p/gerrit/issues/detail?id=11760);
-  Make persistent task keys stable
-
-* [Issue 11745](https://bugs.chromium.org/p/gerrit/issues/detail?id=11745);
-  [Issue 12592](https://bugs.chromium.org/p/gerrit/issues/detail?id=12592);
-  Fix firing pending "..all.." events on startup
-
-* [Issue 12073](https://bugs.chromium.org/p/gerrit/issues/detail?id=12073);
-  Don't reset storage when rescheduling for collisions
-
-* [Issue 12678](https://bugs.chromium.org/p/gerrit/issues/detail?id=12678);
-  GerritRestApi: Fix logging of exceptions
-
-* [Issue 12687](https://bugs.chromium.org/p/gerrit/issues/detail?id=12687);
-  ReplicationTasksStorage: Handle DirectoryIteratorExceptions
-
-* [Issue 12720](https://bugs.chromium.org/p/gerrit/issues/detail?id=12720);
-  Fix extensibility of replication configuration parsing
-
-  This situation was causing a regression for plugins that extend the
-  replication plugin (e.g. pull-replication) because they are expecting
-  a different remote configuration class.
-
 * [Issue 12769](https://bugs.chromium.org/p/gerrit/issues/detail?id=12769);
   Fix synopsis in replication start cmd documentation