doc: remove AUTHORS file

Refs #45573
Issue #45573

Change-Id: Ic9fc6fe02ffd79f7877869816f7d5a303c4782e4

AUTHORS

-Current authors:
-
-Emmanuel Milou <emmanuel dot milou at savoirfairelinux dot com>
-	- ALSA implementation ( replaces portaudio )
-	- Dynamic loading of audio codecs ( shared libraries )
-	- Debian packages
-	- GTK client error handling
-	- Plus many portions of code in sflphoned and sflphone-gtk
-	- Test and debugging
-
-Alexandre Savard <alexandre dot savard at savoirfairelinux dot com>
-
-Alexandre Bourget <alexandre dot bourget at savoirfairelinux dot com>
-	- IAX implementation
-
-Guillaume Carmel-Archambault <guillaume.carmel-archambault at savoirfairelinux dot com>
-	- Presence
-	- Contacts
-Yun Liu <yun.liu at savoirfairelinux dot com>
-	- Change sip library to pjsip
-        - Support multiple accounts registration
-        - Add chinese translation
-        - Many portions of test and debugging
-
-Polytechnic School of Montreal:
-  - Jean-Francois Blanchard-Dionne <jean-francois.blanchard-dionne at polymtl dot ca>
-  - Ala Eddine Limame <ala-eddine.limame at polymtl dot ca>
-  - Alexis S. Bourrelle <bourrelle at polymtl dot ca>
-  - Marilyne Mercier <marilyne.mercier at polymtl dot ca>
-  - Jean Tessier <jean.tessier at polymtl dot ca>
-	- Video layer implementation
-	- Video conference
-
-Pierre-Luc Beaudoin <pierre-luc.beaudoin at savoirfairelinux dot com>
-  - Many portions of code
-  - GTK client implementation
-
-Former authors:
-
-Yan Morin <yan dot morin at savoirfairelinux dot com>
-	- zeroconf integration
-	- sflphoned deamon
-	- add and improve sip core feature
-	- tests and debugging
-
-Jerome Oufella <jerome dot oufella at savoirfairelinux dot com>
-	- Many portions of code and bug fixes
-
-Julien Plissonneau Duquene <... at savoirfairelinux dot com>
-	- autotools cleanups
-
-Jean-Philippe Barrette-LaPierre
-	- Autotools support and portions of code
-
-Laurielle Lea
-	- Implementation of SFLphone
-
-Sherry Yang <syangs04 at yahoo dot com>
-
-Imran Akbar <imr at stanford dot edu>
-	- Working on Win32 port
-
-Contributors:
-
-Mikael Magnusson