Maybe the first thing to erase is your memory of the movie, "Eternal Sunshine of the Spotless Mind" ....
Hypnosis, as far as i know, does not erase your memory banks. It is more like focused meditation than anything else, and helps you focus your conscious and unconscious mind on specific issues or things you wish to accomplish.
If you do happen to find a hypnotist who can "erase" memories, PLEASE post their email address!!!