To remove the whole post footer on sticky posts, add a CSS Insert
HTML Code:
div.sticky div.post-footer {
display: none;
}
To remove just the Date (instead of the whole post footer), wrap the date in a <span class="post-footer-date"> ... </span> at
A. Theme Options -> Post/Page Info Items -> Footer: Homepage
I.e.:
<span class="post-footer-date">%date('F jS, Y')% | </span>%tags-linked .....
Then add a CSS Insert
HTML Code:
div.sticky span.post-footer-date {
display: none;
}