Remove language about RESTRICTED data from docs

[kilbergr]

We'll need to remove all references of restricted access from our documentation so users don't get confused.
These are all exclusively within the documentation layer.

References to restrictions from Terms of use
Whitelisted reference in API docs template
Whitelisted jurisdictions reference in API tutorial template
Whitelisted reference in Data formats doc template
Remove references to restricted access from Researcher user path doc
Remove access limits doc
Remove reference to restrictions/whitelisting in glossary
References to restrictions in case.html
Restrictions References in about
Daily limit in terms of use
Restrictions references in user pathways guidelines
Remove all references to registration/restriction from various templates in the site features docs (api, bulk)
Remove all references to registration/restriction from various templates in the learning tracks docs (api/in depth)
References to restrictions in README
References to restrictions in PDF README (link is broken anyway)
Jurisdiction README references to open/restricted bulk export,

This is a part of the user flow and restricted access tear down feature.