Remove global .frc971.control_loops.drivetrain_queue object

Change-Id: I424f09dcc8bc210e49cbdc805d1a423a72332617
diff --git a/frc971/control_loops/drivetrain/drivetrain.q b/frc971/control_loops/drivetrain/drivetrain.q
index c6af732..c7a307e 100644
--- a/frc971/control_loops/drivetrain/drivetrain.q
+++ b/frc971/control_loops/drivetrain/drivetrain.q
@@ -86,6 +86,7 @@
   float rel_theta;
 };
 
+// Published on ".frc971.control_loops.drivetrain_queue"
 queue_group DrivetrainQueue {
   implements aos.control_loops.ControlLoop;
 
@@ -221,5 +222,3 @@
   queue Output output;
   queue Status status;
 };
-
-queue_group DrivetrainQueue drivetrain_queue;