How to remove a standard text in category page!
Yes I tried to find it there. I havn't found it yet. If you know where it is let me know!
You should really do that with CSS. Tim surely did not want to tell you that it would be better to edit the PHP files (which it is not).
No, it is kinda better to edit the PHP files if you are not upgrading with SVN or Git because CSS needs to be loaded and this takes its time even it's quite short. The easiest way is of course CSS. You can disable it in MediaWiki:Common.css.
@Tim: Ah, so you just assumed that the thread starter doesn't use SVN or Git. And that he/she knows to keep track of core hacks and knows where, when and how to re-apply them after every update and upgrade (be it with SVN/Git, or through zips/tarballs, or through some package manager).
Please never recommend hacking core PHP files again. Especially not to a relatively new developer with the software or with development in general.
Or if it is possible with a bit of CSS, use Site CSS on the wiki.