Remove AUTHORS file from git tracking

Change-Id: Iffe0e217f64634a94654e08bdaf9262cf489dca8

.gitignore

@@ -28,6 +28,7 @@ pip-log.txt
 .tox
 nosetests.xml
 functional_creds.conf
+AUTHORS
 
 # Translations
 *.mo

AUTHORS

@@ -1,23 +0,0 @@
-Anastasia Kuznetsova <akuznetsova@mirantis.com>
-Angus Salkeld <angus.salkeld@rackspace.com>
-Christian Berendt <berendt@b1-systems.de>
-David C Kennedy <David C Kennedy>
-Dmitri Zimine <dz@stackstorm.com>
-Ed Cranford <ed.cranford@rackspace.com>
-Jeremy Stanley <fungi@yuggoth.org>
-Kevin Zheng <zhengzhenyu@huawei.com>
-Kirill Izotov <enykeev@stackstorm.com>
-Leandro I. Costantino <leandro.i.costantino@intel.com>
-Limor Stotland <limor.bortman@alcatel-lucent.com>
-Lingxian Kong <konglingxian@huawei.com>
-Nikolay Mahotkin <nmakhotkin@mirantis.com>
-Pierre-Arthur MATHIEU <pierre-arthur.mathieu@hp.com>
-Renat Akhmerov <rakhmerov@mirantis.com>
-Robert Collins <rbtcollins@hp.com>
-Sirushti Murugesan <sirushti.murugesan@hp.com>
-Tetiana Lashchova <tlashchova@mirantis.com>
-Thomas Goirand <zigo@debian.org>
-Timur Nurlygayanov <tnurlygayanov@mirantis.com>
-Winson Chan <wcchan@stackstorm.com>
-Zhenguo Niu <niuzhenguo@huawei.com>
-zhangguoqing <zhang.guoqing@99cloud.net>