Move aos/input and aos/robot_state to frc971/input

Neither folder makes any sense as part of aos/.

Change-Id: I10e0532da4e688c18a9354012b783c43566fd2a1
diff --git a/y2019/joystick_angle.h b/y2019/joystick_angle.h
index 09ab8af..dfd8bb9 100644
--- a/y2019/joystick_angle.h
+++ b/y2019/joystick_angle.h
@@ -1,10 +1,10 @@
 #ifndef Y2019_JOYSTICK_ANGLE_H_
 #define Y2019_JOYSTICK_ANGLE_H_
 
-#include "aos/input/driver_station_data.h"
+#include "frc971/input/driver_station_data.h"
 
-using ::aos::input::driver_station::JoystickAxis;
-using ::aos::input::driver_station::Data;
+using ::frc971::input::driver_station::Data;
+using ::frc971::input::driver_station::JoystickAxis;
 
 namespace y2019 {
 namespace input {