Restriction splicing - remove restricted

[Filip-Macecek]

Summary

Remove "Restricted!" from Restrictions/set and Restrictions/clear, as these were moved to general availability

Follow style guide

Style guide

Check during review

• The changelog and potentially a deprecation entries are in place.
  • The changelog timestamp is date of merge to develop.
• JSON example extended.
  • New properties are added to the correct place in the JSON.
• New properties in the table are added to the correct place.
• Correct formatting:
  • Spacing is consistent between titles, sections, tables, ...
  • Correct JSON format - indentation.
• DateTime properties should always be defined in ISO format.

[MikeAdamsMews]

Hi @Filip-Macecek, I'm trying to clear the backlog of PRs on the docs. It's nice to see that these operations are no longer restricted, can you also remove the Restricted! labels from the two entries in the API Operations index page as well please? And finally, I think this change deserves an entry in the Changelog too. Thank you!