They stopped in 2011 after the execution of white supremacist murderer Lawrence Brewer, when he ordered a huge last meal of like a dozen different dishes, then said he wasn't hungry and had it thrown away: https://www.bbc.com/news/world-us-canada-15034970
from what i followed, the whole thing was more of a publicity stunt by a politician than anything else, seeing as the last meals were only prepared using prison ingredients anyway
