Convert joystick readers to ActionJoystickInput

This removes most direct users of the autonomous queues.  Convert the
rest over to EventLoops.

Change-Id: I47ac7d5583d597cc9244573d810d512210d1e111
diff --git a/frc971/autonomous/auto.q b/frc971/autonomous/auto.q
index a72514c..f107c90 100644
--- a/frc971/autonomous/auto.q
+++ b/frc971/autonomous/auto.q
@@ -2,20 +2,12 @@
 
 import "aos/actions/actions.q";
 
-message AutoControl {
-  // True if auto mode should be running, false otherwise.
-  bool run_auto;
-};
-
-queue AutoControl autonomous;
-
+// Published on ".frc971.autonomous.auto_mode"
 message AutonomousMode {
   // Mode read from the mode setting sensors.
   int32_t mode;
 };
 
-queue AutonomousMode auto_mode;
-
 struct AutonomousActionParams {
   // The mode from the sensors when auto starts.
   int32_t mode;