Merge branch 'fix-ci-status-link-css' into 'master'

Fix CI status icon link underline

## What does this MR do?

Changes the CSS so that CI status icon does not underline when it is hovered over.

## Are there points in the code the reviewer needs to double check?

Just need to make sure there aren't any side effects (`.ci-status-link` being used without an icon).
To my knowledge, every instance of `.ci-status-link` is tied to a `.ci-status-icon-{statusName}`.

## Why was this MR needed?

Resolves existing bug

## What are the relevant issue numbers?

#20103 

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5408

CHANGELOG

@@ -2,6 +2,7 @@ Please view this file on the master branch, on stable branches it's out of date.
 
 v 8.11.0 (unreleased)
   - Remove magic comments (`# encoding: UTF-8`) from Ruby files !5456 (winniehell)
+  - Fix CI status icon link underline (ClemMakesApps)
   - Fix of 'Commits being passed to custom hooks are already reachable when using the UI'
   - Limit git rev-list output count to one in forced push check
   - Add green outline to New Branch button !5447 (winniehell)

app/assets/stylesheets/pages/merge_requests.scss

@@ -216,6 +216,11 @@
           position: relative;
           top: 3px;
         }
+
+        &:hover,
+        &:focus {
+          text-decoration: none;
+        }
       }
     }
   }