If you store your camper in a storage facility, put the television in your house. Actually, if you store it in a facility, if it's not anchored down, take it out.
If its on your own property, or in storage where you know it's not subject to break-in, then leaving the television in the camper over the winter wont' hurt anything.
But, if it is easily removed, why not? Then there's no guess work. Just bring it into the house and tuck it away.