Guess if it was me, I would leave the hostas and get a sense of how much sun or shade they get this year, a very basic rule of thumb is the blues, greens and whites do better with less sun, but there are always exceptions.
If you find they are frying (crispy leaves) you can always move them since they are very tolerant of transplanting, the largest Sum and Substance I have ever seen was grown in full sun.
I think your hostas will long term do better since they will not be competing with the maple roots.
It would help if we knew what zone you are in, you can fill that info in on your profile.
Welcome to the site,