Fixes changelog entries to reflect that 11.1.3 wasn't released

CHANGELOG.md

@@ -4,25 +4,16 @@ entry.
 ## 11.1.4 (2018-07-30)
-- No changes.
-
-## 11.1.3 (2018-07-27)
-
-### Fixed (8 changes, 1 of them is from the community)
+### Fixed (4 changes, 1 of them is from the community)
 - Rework some projects table indexes around repository_storage field. !20377
-- Fix navigation to First and Next discussion on MR Changes tab. !20434
-- Fix showing outdated discussions on Changes tab. !20445
-- Fix autosave and ESC confirmation issues for MR discussions. !20569
-- Fix rendering of the context lines in MR diffs page. !20642
 - Don't overflow project/group dropdown results. !20704 (gfyoung)
 - Fixed IDE not opening JSON files. !20798
 - Disable Gitaly timeouts when creating or restoring backups. !20810
-### Performance (1 change)
-
-- Reduces the client side memory footprint on merge requests. !20744
+## 11.1.3 (2018-07-27)
+- Not released.
 ## 11.1.2 (2018-07-26)