make the code compile will all our compilers

Change-Id: I11d3bb14cf8fa609bf52cf98c3ae22c550892016
diff --git a/frc971/joystick_reader.cc b/frc971/joystick_reader.cc
index b8b8086..a1181ae 100644
--- a/frc971/joystick_reader.cc
+++ b/frc971/joystick_reader.cc
@@ -33,11 +33,13 @@
 namespace input {
 namespace joysticks {
 
+/*
 // preset motion limits
 static const double kArmDebugVelocity = 0.17;
 static const double kArmDebugAcceleration = 0.8;
 static const double kElevatorDebugVelocity = 0.2;
 static const double kElevatorDebugAcceleration = 2.2;
+*/
 
 const JoystickAxis kSteeringWheel(1, 1), kDriveThrottle(2, 2);
 const ButtonLocation kShiftHigh(2, 1), kShiftLow(2, 3);