[wpilibc] Clean up include files (#2708)

Based on run of include-what-you-use.org to identify unused include files in various .h and .cpp files.

The changes mostly fall into 3 categories:
- Actually unused includes - copy-paste errors, not removing includes after cleaning up code, etc
- A too-broad include used where a more specific (and hopefully smaller) header will do
- Interface .h files including headers only needed by the .cpp implementation - moving from .h to .cpp
  will mean that code which uses the .h doesn't pay the price of processing the header file they don't need

wpilibc/src/main/native/cpp/DriverStation.cpp

@@ -10,7 +10,6 @@
 #include <chrono>
 
 #include <hal/DriverStation.h>
-#include <hal/FRCUsageReporting.h>
 #include <hal/HALBase.h>
 #include <hal/Power.h>
 #include <networktables/NetworkTable.h>
@@ -19,10 +18,8 @@
 #include <wpi/SmallString.h>
 #include <wpi/StringRef.h>
 
-#include "frc/AnalogInput.h"
 #include "frc/MotorSafety.h"
 #include "frc/Timer.h"
-#include "frc/Utility.h"
 #include "frc/WPIErrors.h"
 
 namespace frc {