I think she cut it because It caused much jealousy among the fans! Here in my country when Gaga was seing the gifts, she picked a shirt, and gave this shirt to a girl that went on stage because she wasnt wearing a bra, but after that, when the girl came off the stage, the owner of the shirt beat her for wearing the shirt!! and Gaga knew this because we told her backstage and she was really sad, so imagine how many people has been hurt by jealous monsters. I think she cut it to avoid that kind of situations.
for me going having that at the time i went to see it, it made the show! she proper connects with the audience and made every show unique! but my guess its to do with health and safety as people still threw stuff even after it right in front of dancers and gaga herself while they were dancing!! its a shame to see it go but i can understand it at same time!
I was disappointed about that too! I had a little box for her, it hit her foot and everything and just ignored it. I was so pumped for that from watching the videos...left me feeling bittersweet. I still love her to death but why not do the same thing like everywhere else in the world?