Deprecate License-Check and License Compliance Policies Tab

Topics/pages that need to be updated:

• https://docs.gitlab.com/ee/administration/package_information/licensing.html#checking-licenses
• https://docs.gitlab.com/ee/user/compliance/license_compliance/#policies
• https://docs.gitlab.com/ee/user/compliance/license_compliance/#enabling-license-approvals-within-a-project
• https://docs.gitlab.com/ee/api/merge_request_approvals.html#create-project-level-rule