Cease adding non-interactive inputs to 'bookmark-history'

Cease adding non-interactive inputs to 'bookmark-history'

Remove 'bookmark-maybe-historicize-string', since it's both
buggy (extends 'bookmark-history' indefinitely) and unhelpful.

* lisp/bookmark.el (bookmark-maybe-historicize-string): Don't.
(bookmark-jump,bookmark-relocate,bookmark-insert-location)
(bookmark-rename,bookmark-insert,bookmark-delete): Adjust.

* test/lisp/bookmark-tests.el (bookmark-tests-maybe-historicize-string):
Remove.

* etc/NEWS: Announce.  (Bug#12504)