Financeguy is right - out of all of those songs, only Heartland has not been played in full. In fact, some have been setlist regulars at various points in time.
Lemon: played at all ten shows on the final leg of ZooTV in November and December 1993.
Stay: the only Zooropa song to be played in North America. Played on the last two legs of ZooTV and then acoustically during the Elevation Tour (which is when it debuted in North America).
Heartland: Never played live. Snippeted once during Streets on 13 October 1989 in Melbourne. Unlikely to ever be played.
Babyface: Played five times on the fourth leg of ZooTV.
Please: Played at every single Popmart concert, then at the majority of third leg Elevation shows. It is said U2 almost played it in Chicago on the first leg of the current tour and I imagine they are still considering playing it. On the European leg it was consistently snippeted during Bullet.
Do You Feel Loved: Played six times on Popmart before being dropped.
Who's Gonna Ride Your Wild Horses: Played at every show on the first and second legs of ZooTV, once full band and a few times acoustically on the third leg of ZooTV, and then a few times this year (I was at the Boston show where it was played for the first time in over 12.5 years).
Love Is Blindness: Closed (or played in tandem with I Can't Help Falling In Love With You to close) almost every ZooTV concert.
You might want to have a look at
http://www.u2-vertigo-tour.com/all-u2-tours.html for setlist data and information on what songs have and haven't been played.
