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/y2021_bot3/wpilib_interface.cc b/y2021_bot3/wpilib_interface.cc
index 3dfcfb7..4e07842 100644
--- a/y2021_bot3/wpilib_interface.cc
+++ b/y2021_bot3/wpilib_interface.cc
@@ -27,7 +27,6 @@
 #include "aos/logging/logging.h"
 #include "aos/make_unique.h"
 #include "aos/realtime.h"
-#include "aos/robot_state/robot_state_generated.h"
 #include "aos/time/time.h"
 #include "aos/util/log_interval.h"
 #include "aos/util/phased_loop.h"
@@ -35,6 +34,7 @@
 #include "ctre/phoenix/motorcontrol/can/TalonSRX.h"
 #include "frc971/autonomous/auto_mode_generated.h"
 #include "frc971/control_loops/drivetrain/drivetrain_position_generated.h"
+#include "frc971/input/robot_state_generated.h"
 #include "frc971/wpilib/ADIS16448.h"
 #include "frc971/wpilib/buffered_pcm.h"
 #include "frc971/wpilib/buffered_solenoid.h"