[kNeo]

copied from my response to the same question over at vb.com --

not a perfect solution but you could add:

/* Hides RSS & Subscription graphics on forum index */
#forums .forumactionlinks li {display: none;}

to the additional.css template, this should hide the column only on the forum index page if you want to also hide the column for sub-forum listings add the following below the code from above.

/* Hides RSS & Subscription graphics for subforum listings */
#forumbits .forumactionlinks li {display: none;}

hope that helps, been meaning to change those icons myself, though I have to admit I sort of like them not being displayed at all