Update to tx_nG6_db.php

I removed two useless comments, that I left for no reason.

issue #151

ui/nG6/lib/class.tx_nG6_db.php

@@ -171,8 +171,6 @@ class tx_nG6_db {
 	//Get list of obsolete run/analyses per project
 	static function filter_list_retention_data_info($filter_space, $max_retention_date, $create_user_id, $without_user_group_id,$with_user_group_id) {
 		
-		//file_put_contents("/work/ng6-test/jflow_rtherville/ng6_php.log","IN tx_nG6_db.php, Hello!", FILE_APPEND);
-		
 		$conditions=Array();
                 //filter by date
                 if ( $max_retention_date != "" ) {
@@ -197,9 +195,7 @@ class tx_nG6_db {
 		}
         $where = join(' AND ', $conditions);
         
-        //file_put_contents("/work/ng6-test/jflow_rtherville/ng6_php.log","IN tx_nG6_db.php, returned=".print_r(tx_nG6_db::select_list_retention_data_info($where),TRUE), FILE_APPEND);
-        
-		return (tx_nG6_db::select_list_retention_data_info($where));
+        return (tx_nG6_db::select_list_retention_data_info($where));
 	}
 	
 	static function select_a_project_retention_data_info($project_id=null, $all=FALSE, $count_hidden=FALSE) {