Log in to your Netflix account and check the "Recently Viewed" list to locate the title you want to remove. The three titles are listed in the order of most recently watched.
Select any movie or television show and allow it to play in its entirety. You don't have to sit and watch it, but you need to allow the movie or show to run so that Netflix registers it as being watched.
Return to the "Recently Watched" screen and notice how the show or movie you just played is now in the top slot. If it's bumped the title you wish to remove off the list, you have completed the task. If not, play one or two additional titles to remove the movie or show in question.