Remove gnusocial from cron

src/freedombone-app-gnusocial

     remove_onion_service microblog ${MICROBLOG_ONION_PORT}
     sed -i '/install_gnusocial/d' $COMPLETION_FILE
     sed -i '/GNU Social /d' $COMPLETION_FILE
-    if grep -q "$gnusocial_expire_script" /etc/crontab; then
-        sed -i "/$gnusocial_expire_script/d" /etc/crontab
+    if grep -q "gnusocial" /etc/crontab; then
+        sed -i "/gnusocial/d" /etc/crontab
     fi
     remove_app gnusocial
 }