Implement final review comments from @rymai.

1. Instantiate `ProtectedBranchesAccessSelect` from `dispatcher`

2. Use `can?(user, ...)` instead of `user.can?(...)`

3. Add `DOWNTIME` notes to all migrations added in !5081.

4. Add an explicit `down` method for migrations removing the
   `developers_can_push` and `developers_can_merge` columns, ensuring that
   the columns created (on rollback) have the appropriate defaults.

5. Remove duplicate CHANGELOG entries.

6. Blank lines after guard clauses.

2 files changed, 0 insertions, 6 deletions

diff --git a/app/views/projects/protected_branches/_branches_list.html.haml b/app/views/projects/protected_branches/_branches_list.html.haml
index 2498b57afb4..0603a014008 100644
--- a/app/views/projects/protected_branches/_branches_list.html.haml
+++ b/app/views/projects/protected_branches/_branches_list.html.haml
@@ -24,6 +24,3 @@
       = render partial: @protected_branches, locals: { can_admin_project: can_admin_project }
 
   = paginate @protected_branches, theme: 'gitlab'
-
-:javascript
-  new ProtectedBranchesAccessSelect($(".protected-branches-list"), true, false);
diff --git a/app/views/projects/protected_branches/index.html.haml b/app/views/projects/protected_branches/index.html.haml
index 8270da6cd27..4efe44c7233 100644
--- a/app/views/projects/protected_branches/index.html.haml
+++ b/app/views/projects/protected_branches/index.html.haml
@@ -52,6 +52,3 @@
 
     %hr
     = render "branches_list"
-
-:javascript
-  new ProtectedBranchesAccessSelect($(".new_protected_branch"), false, true);