removed 'share by publiclink' app as it has been superseded by Sharing

apps/files_publiclink/admin.php

apps/files_publiclink/ajax/deletelink.php

apps/files_publiclink/ajax/getlink.php

apps/files_publiclink/ajax/makelink.php

apps/files_publiclink/appinfo/app.php

apps/files_publiclink/appinfo/database.xml

apps/files_publiclink/appinfo/info.xml

apps/files_publiclink/get.php

apps/files_publiclink/js/admin.js

apps/files_publiclink/lib_public.php

apps/files_publiclink/templates/admin.php