According to
this thread in the AF/KLM forum, KLM has decided to stop giving out a small bottle of alcohol to their premium-class customers to/from US and Canada because the passengers were given a hard time by the US authorities when they had the item
after the flight. (That is, exactly what the thread title is about -- taking beverages off of the plane.) KLM has been giving out these little miniature houses with a small bottle of alcohol in it for many, many years.
This will only affect flights to/from US and Canada. Travel to sane countries will be unaffected.