如果要从网址中删除/category/，请执行以下两个步骤:

If you want to remove /category/ from the url, follow these two steps:

1. 转到设置" >>永久链接"，然后选择自定义"，然后输入:/%category%/%postname%/
2. 接下来将您的类别库"设置为.

1. Go to Settings >> Permalinks and select Custom and enter: /%category%/%postname%/
2. Next set your Category Base to .

保存它，您将看到URL更改为以下格式: http://yourblog.com/quotes/

Save it and you’ll see your URL changed to this format: http://yourblog.com/quotes/

(来源: http://premium.wpmudev.org/blog/daily-tip-quick-trick-to-remove-category-from-wordpress-url/)