修正sqlite驱动缓存的一处错误

Author: liu21st

Extend/Driver/Cache/CacheSqlite.class.php

@@ -75,7 +75,6 @@ public function get($name) {
      */
     public function set($name, $value,$expire=null) {
         N('cache_write',1);
-        $expire =  !empty($expireTime)? $expireTime : C('DATA_CACHE_TIME');
         $name  = $this->options['prefix'].sqlite_escape_string($name);
         $value = sqlite_escape_string(serialize($value));
         if(is_null($expire)) {