fix: fix error by double inclusion (thanks Edward Sternin)

bibtexbrowser.php

@@ -47,7 +47,6 @@ function c($key) { // shortcut
 // the changes that require existing bibtexbrowser symbols should be in bibtexbrowser.after.php (included at the end of this file)
 // per bibtex file configuration
 @include('bibtexbrowser.local.php');
-@include(preg_replace('/\.php$/','.local.php',__FILE__));
 
 // the encoding of your bibtex file
 @define('BIBTEX_INPUT_ENCODING','UTF-8');//@define('BIBTEX_INPUT_ENCODING','iso-8859-1');//define('BIBTEX_INPUT_ENCODING','windows-1252');