drop obsolete scripts, fix typo

cli/cleanup_visits.php

@@ -9,4 +9,4 @@ $stmt = $db->prepare('DELETE FROM object_user_visits WHERE visitdate < ?');
 $stmt->execute([$threshold]);
 
 $stmt = $db->prepare('DELETE FROM forum_visits WHERE visitdate < ?');
-$stmt->execute([$$threshold]);
+$stmt->execute([$threshold]);

cli/rssmail.php

-#!/usr/bin/php
-<?php
-/*
- * mail.php - forward Stud.IP news from RSS feed via e-mail
- *
- * Copyright (C) 2012  Elmar Ludwig
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- */
-
-$TIMESTAMP_FILE = __DIR__ . '/rssmail.lastrun';
-$timestamp = (int) @filemtime($TIMESTAMP_FILE);
-
-$RSS_URL = 'https://studip.uni-osnabrueck.de/rss.php?id=91c5e0f445279c005ea9687726209da0';
-$xmlns_dc = "http://purl.org/dc/elements/1.1/";
-
-$mail_to = 'virtuos-vorstand@list.serv.uni-osnabrueck.de';
-$subject = 'Aktuelle News aus dem Zentrum virtUOS';
-$headers = [
-    'MIME-Version: 1.0',
-    'Content-Type: text/plain; charset=UTF-8',
-    'Content-Transfer-Encoding: 8bit',
-    'From: virtUOS News <virtuos@uni-osnabrueck.de>'
-];
-$mail   = '';
-$footer = "Diese Mail ist eine automatische Zusammenstellung der aktuellen ".
-          "News des Zentrum virtUOS <http://www.virtuos.uni-osnabrueck.de>.\n";
-
-$rss = new SimpleXMLElement($RSS_URL, LIBXML_COMPACT, true);
-
-function strip_tags_br($text) {
-    return strip_tags(str_replace('<br>', "\n", $text));
-}
-
-foreach ($rss->channel->item as $item) {
-    $time = strtotime($item->pubDate);
-
-    if ($time > $timestamp) {
-        $mail .= sprintf("%s\n\n%s\n(geschrieben von %s am %s)\n\n\n",
-                         $item->title,
-                         strip_tags_br($item->description),
-                         $item->children($xmlns_dc)->contributor,
-                         strftime('%d.%m.%Y', $time));
-    }
-}
-
-if ($mail !== '') {
-    mail($mail_to, $subject, "$mail$footer", join("\r\n", $headers));
-    touch($TIMESTAMP_FILE);
-}

cli/update_faq.sh

-#!/bin/sh
-
-PATH=/bin:/usr/bin; export PATH
-
-RSS_CACHE_DIR=/data/studip_uni/tmp
-FAQ_URL=https://zentrum.virtuos.uni-osnabrueck.de/studip_faq/faq.xml
-
-if wget -qO "$RSS_CACHE_DIR/faq.tmp" "$FAQ_URL"; then
-    if grep -q '<rss version="2.0"' "$RSS_CACHE_DIR/faq.tmp"; then
-        mv "$RSS_CACHE_DIR/faq.tmp" "$RSS_CACHE_DIR/faq.xml"
-    fi
-fi
-
-touch "$RSS_CACHE_DIR/faq.xml"