Remove noop call to finfo_close

See: https://www.php.net/manual/en/migration85.deprecated.php
The finfo_close() function has been deprecated. As finfo objects are freed automatically.

Author: vmcj

webapp/src/Utils/Utils.php

@@ -994,8 +994,6 @@ public static function getTextType(string $clientName, string $realPath): ?strin
 
             [$type] = explode('; ', finfo_file($finfo, $realPath));
 
-            finfo_close($finfo);
-
             switch ($type) {
                 case 'application/pdf':
                     $textType = 'pdf';