* lisp/subr.el (custom-declare-variable-early): Remove function.

* lisp/subr.el (custom-declare-variable-early): Remove function.
(custom-declare-variable-list): Remove var.
(error, user-error): Remove `while' loop.
(read-quoted-char-radix, read-quoted-char): Move to simple.el.
(user-emacs-directory-warning, locate-user-emacs-file):
Move to files.el.
* lisp/simple.el (read-quoted-char-radix, read-quoted-char):
* lisp/files.el (user-emacs-directory-warning, locate-user-emacs-file):
Move from subr.el.
* lisp/custom.el (custom-declare-variable-list): Don't process
custom-declare-variable-list.