Removes disabled rule from settings_panel EE to match the CE version

What does this MR do?

Removes disabled rule from settings_panel EE to match the CE version

CE: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/assets/javascripts/pages/projects/shared/permissions/components/settings_panel.vue EE: https://gitlab.com/gitlab-org/gitlab-Ee/blob/master/app/assets/javascripts/pages/projects/shared/permissions/components/settings_panel.vue

What are the relevant issue numbers?

#7346 (moved)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• EE specific content should be in the top level /ee folder
• For a paid feature, have we considered GitLab.com plans, how it works for groups, and is there a design for promoting it to users who aren't on the correct plan?

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/7346