Replace fa-pencil icon with GitLab SVG

- replace last fa-pencil instance

app/assets/stylesheets/fontawesome_custom.scss

@@ -262,10 +262,6 @@
   content: '\f0ac';
 }
 
-.fa-pencil::before {
-  content: '\f040';
-}
-
 .fa-pause::before {
   content: '\f04c';
 }

app/views/groups/runners/_runner.html.haml

@@ -68,7 +68,7 @@
     .btn-group.table-action-buttons
       .btn-group
         = link_to edit_group_runner_path(@group, runner), class: 'btn btn-default has-tooltip', title: _('Edit'), ref: 'tooltip', aria: { label: _('Edit') }, data: { placement: 'top', container: 'body'} do
-          = icon('pencil')
+          = sprite_icon('pencil')
       .btn-group
         - if runner.active?
           = link_to pause_group_runner_path(@group, runner), method: :post, class: 'btn btn-default has-tooltip', title: _('Pause'), ref: 'tooltip', aria: { label: _('Pause') }, data: { placement: 'top', container: 'body', confirm: _('Are you sure?') } do

changelogs/unreleased/225951-replace-fa-pencil-icon.yml

+---
+title: Replace fa-pencil icon with GitLab SVG
+merge_request: 39648
+author:
+type: other