[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.

wpilibj/src/test/java/edu/wpi/first/wpilibj/simulation/ServoSimTest.java

@@ -1,37 +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.
-
-package edu.wpi.first.wpilibj.simulation;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-import edu.wpi.first.hal.HAL;
-import edu.wpi.first.wpilibj.Servo;
-import org.junit.jupiter.api.Test;
-
-class ServoSimTest {
-  @Test
-  void testServo() {
-    HAL.initialize(500, 0);
-
-    try (Servo servo = new Servo(0)) {
-      ServoSim sim = new ServoSim(servo);
-
-      servo.set(0);
-      assertEquals(0, sim.getPosition());
-
-      servo.set(0.354);
-      assertEquals(0.354, sim.getPosition());
-
-      servo.setAngle(10);
-      assertEquals(10, sim.getAngle());
-
-      servo.setAngle(90);
-      assertEquals(90, sim.getAngle());
-
-      servo.setAngle(170);
-      assertEquals(170, sim.getAngle());
-    }
-  }
-}