docs - remove enterprise refs (#21091)

docs/administration-guide/06-collections.md

docs/administration-guide/10-single-sign-on.md

docs/administration-guide/sso.md

docs/enterprise-guide/authenticating-with-saml-azure-ad.md

docs/enterprise-guide/authenticating-with-saml.md

docs/enterprise-guide/cache.md

docs/enterprise-guide/dashboard-subscriptions.md

docs/enterprise-guide/data-sandboxes.md

docs/enterprise-guide/full-app-embedding.md

docs/enterprise-guide/sql-snippets.md

docs/operations-guide/environment-variables.md

docs/troubleshooting-guide/loading-from-h2.md

docs/troubleshooting-guide/permissions.md

docs/users-guide/dashboard-subscriptions.md

docs/users-guide/interactive-dashboards.md

docs/users-guide/sql-snippets.md