Remove deprecated qi::atomic ( thousands of warnings )

Change-Id: Iaba5a0446e5e4ef04bab964984e585fe124473af
Reviewed-on: http://gerrit.aldebaran.lan/25447
Reviewed-by: cgestes <gestes@aldebaran-robotics.com>
Reviewed-by: ckilner <ckilner@aldebaran-robotics.com>
Tested-by: ckilner <ckilner@aldebaran-robotics.com>