Remove prosody data

src/freedombone-app-xmpp

     if [ -d /etc/prosody ]; then
         rm -rf /etc/prosody
     fi
+    if [ -d /var/lib/prosody ]; then
+        rm -rf /var/lib/prosody
+    fi
 
     remove_completion_param install_xmpp
     sed -i '/xmpp/d' $COMPLETION_FILE