I agree with Sandy and Rick, leave them both and as soon as your squash plant has set a few good fruit for you, cut off the ends of the vines. Solves three problems for you, it will make it be a "semi-bush" like it was supposed to be, keep it from being too huge to crowd out your tomato plant, and it will keep it from taking over your neighbor's plot. The tomato will 'reach' for the sunlight so if you give it a tall enough stake you can grow it up so it has lots of sun.
The tomato plant would either die outright or not give you any fruit if you moved it now. Their roots grow deep and wide.
