If you have a paid membership, you can delete I Remember You entries left on your profile.
To delete qualities other people have left, desktop users should click My Classmates® in the top portion of any page. (For mobile users, click , you may have to expand to make your selection). Under My Profile, click Remembers. You'll be taken to your I Remember You page, where you can click X next to any words you wish to remove.
While you can remove I Remember You entries on your own profile, once you've shared a quality on someone else's profile you cannot edit or delete it.