calendar housekeeping prompted by lexical-binding.

calendar housekeeping prompted by lexical-binding.

* lisp/calendar/appt.el (appt-make-list):
* lisp/calendar/cal-china.el (calendar-chinese-date-string):
* lisp/calendar/cal-hebrew.el (calendar-hebrew-list-yahrzeits)
(diary-hebrew-yahrzeit):
* lisp/calendar/cal-tex.el (cal-tex-last-blank-p, cal-tex-cursor-week2):
* lisp/calendar/calendar.el (calendar-generate-window):
* lisp/calendar/time-date.el (time-to-days):
Remove unused local variables.

* lisp/calendar/cal-dst.el (dst-adjust-time): Remove never-implemented
optional argument `style'.

* lisp/calendar/cal-tex.el (cal-tex-list-holidays, cal-tex-cursor-month)
(cal-tex-cursor-week, cal-tex-cursor-week2, cal-tex-cursor-week-iso)
(cal-tex-cursor-filofax-2week, cal-tex-cursor-filofax-week)
(cal-tex-cursor-filofax-daily, cal-tex-mini-calendar)
* lisp/calendar/cal-html.el (cal-html-insert-minical):
* lisp/calendar/diary-lib.el (diary-list-entries-1, diary-list-entries)
(calendar-mark-date-pattern):
Prefix "unused" locals.