Update config.cache.inc.php

src/install/config.cache.inc.php

@@ -5,7 +5,6 @@ $cfg_cookie_encode = '~cookieEncode~';
 $cfg_indexurl = '~indexurl~';
 $cfg_backup_dir = 'backupdata';
 $cfg_indexname = '网站首页';
-$cfg_indexseo = '';
 $cfg_webname = '~webname~';
 $cfg_adminemail = '~adminmail~';
 $cfg_html_editor = 'ckeditor';