Clean up a few after-merge idiosyncrasies.

- Get the bot3 input code up to date. (Again.)
- Get rid of old gyro_reader.cc file, which somehow survived.
diff --git a/bot3/input/input.gyp b/bot3/input/input.gyp
index 5beb3d0..b428dc2 100644
--- a/bot3/input/input.gyp
+++ b/bot3/input/input.gyp
@@ -10,6 +10,7 @@
         '<(AOS)/atom_code/input/input.gyp:joystick_input',
         '<(AOS)/atom_code/atom_code.gyp:init',
         '<(AOS)/build/aos.gyp:logging',
+
         '<(DEPTH)/bot3/control_loops/drivetrain/drivetrain.gyp:drivetrain_loop',
         '<(DEPTH)/frc971/queues/queues.gyp:queues',
         '<(DEPTH)/bot3/autonomous/autonomous.gyp:auto_queue',
@@ -25,40 +26,28 @@
         '<(DEPTH)/bot3/control_loops/drivetrain/drivetrain.gyp:drivetrain_loop',
         '<(DEPTH)/frc971/queues/queues.gyp:queues',
         '<(AOS)/atom_code/atom_code.gyp:init',
-        '<(DEPTH)/gyro_board/src/libusb-driver/libusb-driver.gyp:libusb_wrap',
-        '<(EXTERNALS):libusb',
         '<(AOS)/build/aos.gyp:logging',
-        '<(AOS)/common/common.gyp:time',
-        '<(AOS)/common/sensors/sensors.gyp:sensor_receiver',
+        '<(AOS)/common/util/util.gyp:wrapping_counter',
+        'usb_receiver',
       ],
     },
     {
-      'target_name': 'gyro_board_reader',
-      'type': 'executable',
+      'target_name': 'usb_receiver',
+      'type': 'static_library',
       'sources': [
-        'gyro_board_reader.cc',
+        '<(DEPTH)/frc971/input/usb_receiver.cc',
       ],
       'dependencies': [
-        '<(DEPTH)/bot3/control_loops/drivetrain/drivetrain.gyp:drivetrain_loop',
-        '<(DEPTH)/frc971/queues/queues.gyp:queues',
-        '<(AOS)/atom_code/atom_code.gyp:init',
         '<(DEPTH)/gyro_board/src/libusb-driver/libusb-driver.gyp:libusb_wrap',
-        '<(EXTERNALS):libusb',
         '<(AOS)/build/aos.gyp:logging',
+        '<(AOS)/common/util/util.gyp:wrapping_counter',
         '<(AOS)/common/common.gyp:time',
-        '<(AOS)/common/common.gyp:timing',
+        '<(AOS)/common/common.gyp:controls',
       ],
-    },
-    {
-      'target_name': 'gyro_reader',
-      'type': 'executable',
-      'sources': [
-        'gyro_reader.cc',
-      ],
-      'dependencies': [
-        '<(DEPTH)/frc971/queues/queues.gyp:queues',
-        '<(AOS)/atom_code/atom_code.gyp:init',
-        '<(AOS)/build/aos.gyp:logging',
+      'export_dependent_settings': [
+        '<(DEPTH)/gyro_board/src/libusb-driver/libusb-driver.gyp:libusb_wrap',
+        '<(AOS)/common/util/util.gyp:wrapping_counter',
+        '<(AOS)/common/common.gyp:time',
       ],
     },
   ],