Revert the current experience based content page variation implementation

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: None
• Component/s: Staging
• Labels:
  • 7.4
  • 7.4-must
  • fc_21_05
  • test_not_needed
• Epic Link: Content page versioning

Once we will have had the Staging framework's page revision based content page variation implementation we most probably need to remove the current, experience based content page versioning solution because preventing confusion at customers and because we don't need the parallel solutions.