Fix CHANGELOG.

CHANGELOG

@@ -8,21 +8,10 @@ v 8.11.4
   - Fix "Wiki" link not appearing in navigation for projects with external wiki. !6057
   - Do not enforce using hash with hidden key in CI configuration. !6079
   - Fix hover leading space bug in pipeline graph !5980
-  - Do not enforce using hash with hidden key in CI configuration. !6079
-  - Creating an issue through our API now emails label subscribers !5720
   - Block concurrent updates for Pipeline
-  - Fix resolving conflicts on forks
-  - Fix diff commenting on merge requests created prior to 8.10
   - Fix issue boards leak private label names and descriptions
 
 v 8.11.3
-
-v 8.11.4 (unreleased)
-  - Fix issue boards leak private label names and descriptions
-
-v 8.11.3 (unreleased)
-  - Allow system info page to handle case where info is unavailable
-  - Label list shows all issues (opened or closed) with that label
   - Don't show resolve conflicts link before MR status is updated
   - Fix IE11 fork button bug !5982
   - Don't prevent viewing the MR when git refs for conflicts can't be found on disk