* progmodes/scheme.el (would-be-symbol, next-sexp-as-string):

* progmodes/scheme.el (would-be-symbol, next-sexp-as-string):
Comment out unused functions.

* progmodes/xscheme.el (xscheme-expressions-ring)
(xscheme-expressions-ring-yank-pointer, xscheme-running-p)
(xscheme-control-g-disabled-p, xscheme-process-filter-state)
(xscheme-allow-output-p, xscheme-prompt)
(xscheme-string-accumulator, xscheme-mode-string): Use defvar-local.