Trying to remove an image from 1 page…Please help!

Hi,
I am trying to remove an image (img/comments_counter.png) from 1 page (page id-22) but i am having no look at all! I am new (ish) to css coding and i was wondering if anybody could give me a dig-out?
Heres the code:

span.comments_link{
background:url(img/comments_counter.png) no-repeat top left;
width: 78px;
height: 66px;
text-align:center;
display:block;
color:white;
padding:5px 0 0;
font-size:11px;
position:absolute;
top:10px;
right:0;