notifications: remove dead code

src/notifications.js

@@ -246,9 +246,6 @@ async function onEvent(id, action, source, data) {
     assert.strictEqual(typeof source, 'object');
     assert.strictEqual(typeof data, 'object');
 
-    // external ldap syncer does not generate notifications - FIXME username might be an issue here
-    if (source.username === AuditSource.EXTERNAL_LDAP_TASK.username) return;
-
     switch (action) {
     case eventlog.ACTION_APP_OOM:
         return await oomEvent(id, data.containerId, data.app, data.addonName, data.event);