Replace IterativeRobot in examples with TimedRobot (#1310)

Fixes #1309.

wpilibcExamples/src/main/cpp/examples/MotorControl/cpp/Robot.cpp

@@ -5,9 +5,9 @@
 /* the project.                                                               */
 /*----------------------------------------------------------------------------*/
 
-#include <frc/IterativeRobot.h>
 #include <frc/Joystick.h>
 #include <frc/Spark.h>
+#include <frc/TimedRobot.h>
 
 /**
  * This sample program shows how to control a motor using a joystick. In the
@@ -17,7 +17,7 @@
  * Joystick analog values range from -1 to 1 and speed controller inputs as
  * range from -1 to 1 making it easy to work together.
  */
-class Robot : public frc::IterativeRobot {
+class Robot : public frc::TimedRobot {
  public:
   void TeleopPeriodic() override { m_motor.Set(m_stick.GetY()); }