Here is a little Camp Curry history: http://www.undiscovered-yosemite.com/curry.html
Tear down Camp Curry? Heck no! There are ways of dealing with the Deer Mouse problem other than removing the buildings - the mice will just find other accomodation. (There is plenty of online information on how to deal with Hantavirus.) Even so-called mouse-proof buildings prove to be no obstacle to determine rodents. Wherever there is food, the mice will gather.