Gnus -- minor build / warning fixes [OK For Upstream]

Gnus -- minor build / warning fixes [OK For Upstream]

	* lisp/smime.el (smime-decrypt-region): Remove unused 'CAs'.

	* lisp/nnml.el (nnml-generate-nov-file): Remove unnecessary
	let-bound 'file' as the #'dolist will care for it.

	* lisp/nnmh.el (nnmh-request-list-1): Remove unnecessary let-bound
	'rdir' the #'dolist will care for it.

	* lisp/nnmairix.el (nnmairix-request-group): Remove unused
	'args'.

	* lisp/mailcap.el (mailcap-viewer-passes-test): Remove unused
	'parsed-test'.
	(mailcap-mime-info): Comment out 'save-pos', 'minor-info',
	'test'.  All unused.

	* lisp/ietf-drums.el (ietf-drums-remove-comments): Use 'nil'
	instead of 'err' in the #'condition-case.

	* lisp/gnus.el (gnus-short-group-name): Comment out unused var,
	'name'.

	* lisp/gnus-uu.el (gnus-uu-yenc-article): Remove unused
	'start-char'.

	* lisp/gnus-sum.el (gnus-adjust-marked-articles): Remove
	unnecessary let-bound var, 'marks', the #'dolist will care for
	it.
	(gnus-summary-better-unread-subject): Remove unused 'score'.
	(gnus-summary-find-matching): Remove unused 'd'.

	* lisp/gnus-picon.el (gnus-picon-find-face): Don't let-bind
	'database', 'directory', 'instance', they're all defined later via
	#'dolist.
	(gnus-picon-transform-newsgroups): Remove unused local var,
	'point'.

	* lisp/gnus-msg.el (gnus-configure-posting-styles): Remove
	unnecessary let-bound variables, 'style' and 'attribute',  They
	are both defined later in a #'dolist.

	* lisp/gnus-html.el (gnus-html-wash-images): Remove unused local
	vars, 'tag', 'string', 'images'.
	(gnus-html-wash-tags): Ditto 'string' 'images'.

	* lisp/gnus-delay.el (gnus-delay-article): Remove unused local
	var, 'days'.

	* lisp/gnus-cloud.el (gnus-cloud-ensure-cloud-group): Use the
	let-bound 'method' in the body of the function.

	* lisp/gnus-bookmark.el (gnus-bookmark-bmenu-list): Remove unused
	local vars, 'start', 'end'.

	* lisp/deuglify.el (gnus-outlook-rearrange-article): Comment out
	unused local vars.

	* lisp/binhex.el (binhex-decode-region-external): Remove unused
	local var, 'status'.

	* lisp/assistant.el (assistant-find-next-nodes): Remove unused
	local var, 'next'.

Signed-off-by: Steve Youngs <steve@sxemacs.org>
(cherry picked from commit c80271fad8861d9c475d58001c924c3ab4140a68)