Remove ICS link

Remove link to International Citizen Service, as the link is broken and the service is no longer running.

app/views/content_items/get_involved.html.erb

@@ -202,7 +202,6 @@
 
   <%= render "govuk_publishing_components/components/list", {
     items: [
-      sanitize("<a href=\"http://www.volunteerics.org/\" class=\"govuk-link\">#{t('get_involved.join_ics')}</a>"),
       sanitize("<a href=\"http://www.ourwatch.org.uk/knowledge-base-category/how-to-get-involved/\" class=\"govuk-link\">#{t('get_involved.neighbourhood_watch')}</a>"),
       sanitize("<a href=\"/donating-to-charity\" class=\"govuk-link\">#{t('get_involved.make_donation')}</a>"),
       sanitize("<a href=\"https://schoolsonline.britishcouncil.org/about-schools-online/about-programmes/connecting-classrooms\" rel=\"noopener\" class=\"govuk-link\">#{t('get_involved.school_overseas')}</a>"),