The Delete Comment icon in the Review Dialog was displaying two

confirmation prompts when clicked. Either one would trigger the deletion

of the comment, with the second failing.
The reason for this is that we had two elements each with the

delete-comment CSS class, which the event was tied to. Both the

clickable anchor and the icon itself shared this class.
This change simply removes the CSS class from the icon. The icon's

display is not affected, and this removes the double confirmation.

Tried deleting a comment. Verified that I could click either the cancel

or confirmation buttons and wouldn't see a second prompt. I was also able

to successfully cancel or delete the comment.
Checked to make sure the presentation still seemed correct.