Cleanup unused methods and code formatting

lib/AudioBook.php

@@ -1,4 +1,5 @@
 <?php
+
 require_once('DbMapping.php');
 
 class BookNotFoundException extends WebException {
@@ -7,13 +8,6 @@ class BookNotFoundException extends WebException {
     }
 }
 
-function convertMSChar($src)
-{
-    $text = preg_replace('/([\xc0-\xdf].)/se', "'&#' . ((ord(substr('$1', 0, 1)) - 192) * 64 + (ord(substr('$1', 1, 1)) - 128)) . ';'", $src);
-    $text = preg_replace('/([\xe0-\xef]..)/se', "'&#' . ((ord(substr('$1', 0, 1)) - 224) * 4096 + (ord(substr('$1', 1, 1)) - 128) * 64 + (ord(substr('$1', 2, 1)) - 128)) . ';'", $text);
-    return $text;
-}
-
 /**
  * AudioBook is mapped on a Notice from NetBiblio
  *
@@ -168,24 +162,6 @@ class AudioBook extends DbMapping
         return $multiple ? $books : reset($books);
     }
 
-    /**
-     * @param $code
-     * @return int
-     * @throws BookNotFoundException
-     * @throws SqlException
-     */
-    public static function findIdByCode($code)
-    {
-        $sql = "SELECT NoticeId FROM Notices WHERE LTRIM(RTRIM(NoticeNr)) = '$code';";
-        $result = Connection::execute($sql, false);
-        if ($result === false || $result->length == 0) {
-            throw new BookNotFoundException($code);
-        }
-
-        $row = $result->current();
-        return $row['NoticeId'];
-    }
-
     /**
      * Retrieve the list of all readers (volunteers) having read at least 4 books (2 notices per book).
      * Returns an associative array containing $lastname and $firstname