[wpilib] Remove Servo Classes (#8270)

SystemCore doesn't directly support Servos. It would be possible to still use a Servo Power Module, but those are fairly rare, and we should probably use a different class for that case, so users don't attempt to hook a servo directly up to systemcore. That will depend on what happens with the rules in 2027.

Rev Servo Hubs are a current working replacement for systemcore users.

wpilibc/src/main/native/cpp/simulation/ServoSim.cpp

@@ -1,28 +0,0 @@
-// Copyright (c) FIRST and other WPILib contributors.
-// Open Source Software; you can modify and/or share it under the terms of
-// the WPILib BSD license file in the root directory of this project.
-
-#include "frc/simulation/ServoSim.h"
-
-#include <hal/SimDevice.h>
-#include <units/length.h>
-
-#include "frc/simulation/SimDeviceSim.h"
-
-using namespace frc;
-using namespace frc::sim;
-
-ServoSim::ServoSim(const Servo& servo) : ServoSim(servo.GetChannel()) {}
-
-ServoSim::ServoSim(int channel) {
-  frc::sim::SimDeviceSim deviceSim{"Servo", channel};
-  m_simPosition = deviceSim.GetDouble("Position");
-}
-
-double ServoSim::GetPosition() const {
-  return m_simPosition.Get();
-}
-
-double ServoSim::GetAngle() const {
-  return GetPosition() * Servo::GetServoAngleRange() + Servo::kMinServoAngle;
-}