Removing unused variable $marker_any_re in doLists.

Fixes michelf#121.

Author: michelf

Michelf/Markdown.php

@@ -789,7 +789,6 @@ protected function doLists($text) {
 		# Re-usable patterns to match list item bullets and number markers:
 		$marker_ul_re  = '[*+-]';
 		$marker_ol_re  = '\d+[\.]';
-		$marker_any_re = "(?:$marker_ul_re|$marker_ol_re)";
 
 		$markers_relist = array(
 			$marker_ul_re => $marker_ol_re,