pidgin/pidgin

Remove Finch logging preferences but add Credential Provider preference.

The logging preferences were removed because they were removed when the History API was merged, but their Finch UI remained. Also there's currently no preference for the history adapter so no reason to put it in now.

Testing Done:
Opened the preference window in finch and made sure the settings saved.

Reviewed at https://reviews.imfreedom.org/r/1595/
Björn Voigt <bjoernv@arcor.de> Björn Voigt <bjoern@cs.tu-berlin.de>
Björn Voigt <bjoernv@arcor.de> Bjoern Voigt <bjoern@cs.tu-berlin.de>
David Woodhouse <dwmw2@infradead.org> <David.Woodhouse@intel.com>
David Woodhouse <dwmw2@infradead.org> <dwmw@amazon.co.uk>
David Woodhouse <dwmw2@infradead.org> dwmw2 <dwmw2@infradead.org>
# not sure how to make this one work because this doesn't do it..
dequis <dx@dxzone.com.ar> dequis <dx@dxzone.com.ar
dequis <dx@dxzone.com.ar> dx <dx@dxzone.com.ar>
Eion Robb <eion@robbmob.com> Eion Robb <eionrobb@gmail.com>
Elliott Sales de Andrade <quantum.analyst@gmail.com> Elliott Sales de Andrade <qulogic@pidgin.im>
Elliott Sales de Andrade <quantum.analyst@gmail.com> Elliott S <quantum.analyst@gmail.com>
Ethan Blanton <elb@pidgin.im> Ethan Blanton <elb@fiji-systems.com>
Ethan Blanton <elb@pidgin.im> Ethan Blanton <elb@kb8ojh.net>
Gary Kramlich <grim@reaperworld.com> <grim@pidgin.im>
Jerin Philip <monu1618@gmail.com> Jerin Philip <jerin.philip@students.iiit.ac.in>
Jonathan Champ <jrchamp@ncsu.edu> Jonathan Champ <royanee@users.sourceforge.net>
Jorge Villaseñor <salinasv@pidgin.im> Jorge Villaseñor <masca@cpw.pidgin.im>
Mark Doliner <mark@kingant.net> Mark Doliner <markdoliner@pidgin.im>
Matěj Cepl <mcepl@cepl.eu> Matěj Cepl <mcepl@redhat.com>
Michael McConville <mmcconville@mykolab.com> Michael McConville <mmcco@mykolab.com>
Michael McConville <mmcconville@mykolab.com> mmcconville@mykolab.com
Mike Ruprecht <cmaiku@gmail.com> Michael Ruprecht <maiku@pidgin.im>
Richard Laager <rlaager@wiktel.com> Richard Laager <rlaager@pidgin.im>
Robert Vehse <robertvehse@fastmail.fm> Robbie <robertvehse@fastmail.fm>
Shalom Craimer <scraimer@gmail.com> Shalom Craimer <s.transifex2015@craimer.org>
Tomasz Wasilczyk <twasilczyk@pidgin.im> Tomasz Wasilczyk <tomkiewicz@cpw.pidgin.im>
Yngve Spjeld Landro <l10n@landro.net> Yngve Spjeld Landro <nynorsk@strilen.net>