Revert "Merge branch 'confidential-issues-redesign-docs' into 'master'"

This reverts merge request !12195

doc/user/project/issues/confidential_issues.md

@@ -43,8 +43,9 @@ next to the issues that are marked as confidential.
 
 ---
 
-While inside the issue, you can see a persistent dark banner at the top of the
-screen.
+Likewise, while inside the issue, you can see the eye-slash icon right next to
+the issue number, but there is also an indicator in the comment area that the
+issue you are commenting on is confidential.
 
 ![Confidential issue page](img/confidential_issues_issue_page.png)