Set "Remove group avatar" modal button's variant to danger

app/views/groups/settings/_general.html.haml

@@ -30,7 +30,7 @@
     = render 'shared/choose_avatar_button', f: f
     - if @group.avatar?
       %hr
-      = link_to s_('Groups|Remove avatar'), group_avatar_path(@group.to_param), data: { confirm: s_('Groups|Avatar will be removed. Are you sure?')}, method: :delete, class: 'gl-button btn btn-danger-secondary'
+      = link_to s_('Groups|Remove avatar'), group_avatar_path(@group.to_param), aria: { label: s_('Groups|Remove avatar') }, data: { confirm: s_('Groups|Avatar will be removed. Are you sure?'), 'confirm-btn-variant': 'danger' }, method: :delete, class: 'gl-button btn btn-danger-secondary'
 
   = render 'shared/visibility_level', f: f, visibility_level: @group.visibility_level, can_change_visibility_level: can_change_group_visibility_level?(@group), form_model: @group
   = f.submit s_('Groups|Save changes'), class: 'btn gl-button btn-confirm mt-4 js-dirty-submit', data: { qa_selector: 'save_name_visibility_settings_button' }