[examples] Misc fixes for snippets (#7952)

wpilibcExamples/src/main/cpp/snippets/AnalogEncoder/cpp/Robot.cpp

@@ -2,8 +2,6 @@
 // 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 <numbers>
-
 #include <frc/AnalogEncoder.h>
 #include <frc/TimedRobot.h>
 

wpilibcExamples/src/main/cpp/snippets/DutyCycleEncoder/cpp/Robot.cpp

@@ -2,8 +2,6 @@
 // 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 <numbers>
-
 #include <frc/DutyCycleEncoder.h>
 #include <frc/TimedRobot.h>
 

wpilibcExamples/src/main/cpp/snippets/Encoder/cpp/Robot.cpp

@@ -2,11 +2,8 @@
 // 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 <numbers>
-
 #include <frc/Encoder.h>
 #include <frc/TimedRobot.h>
-#include <frc/smartdashboard/SmartDashboard.h>
 #include <wpi/deprecated.h>
 
 /**

wpilibcExamples/src/main/cpp/snippets/EncoderDrive/cpp/Robot.cpp

@@ -2,8 +2,6 @@
 // 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 <numbers>
-
 #include <frc/Encoder.h>
 #include <frc/TimedRobot.h>
 #include <frc/drive/DifferentialDrive.h>

wpilibcExamples/src/main/cpp/snippets/EncoderHoming/cpp/Robot.cpp

@@ -2,8 +2,6 @@
 // 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 <numbers>
-
 #include <frc/DigitalInput.h>
 #include <frc/Encoder.h>
 #include <frc/TimedRobot.h>