chore: remove terms of service setting

Keep privacy policy and user agreement links as the supported legal documents.

Refresh the admin settings manifest, demo dataset, locales, docs, and bot menu tests.

locales/en.json

@@ -23,7 +23,6 @@
   "menu_language_settings_inline": "🌐 Language",
   "menu_server_status_button": "📊 Status",
   "menu_support_button": "💬 Admin contact",
-  "menu_terms_button": "📄 Terms of Service",
   "menu_info_button": "ℹ️ Information",
   "bot_interface_menu_title": "Bot interface",
   "bot_interface_menu_webapp_hint": "The Personal Account is the easier place to manage the service.",
@@ -1591,7 +1590,6 @@
   "admin_settings_field_support_link_label": "Support Link",
   "admin_settings_field_support_link_description": "Controls the 'Support Link' setting in admin overrides.",
   "admin_settings_field_server_status_url_label": "Server Status URL",
-  "admin_settings_field_terms_of_service_url_label": "Terms Of Service URL",
   "admin_settings_field_privacy_policy_url_label": "Privacy Policy URL",
   "admin_settings_field_user_agreement_url_label": "User Agreement URL",
   "admin_settings_field_disable_welcome_message_label": "Disable Welcome Message",