If this is the Trump Administration's "punishment" for "disloyalty", then we are in for a treat. Hopefully US forces can also be withdrawn from Japan, Iraq, Italy, Guam, and the other 180 locations where they are currently unnecessarily stationed.
Overall it meets the primary directive of this administration, which is to weaken the United States as a superpower and make way for Russia.
Unless Germany denies the US Ramstein airbase and spying operations, you can safely bet they'll stay. Even if they withdraw everything that isn't required to just keep operating the airbase and listening posts, they'll at least keep those around for as long as they are able to actually use them.