[command] Remove old command-based framework (#4211)

wpilibNewCommands/src/main/java/edu/wpi/first/wpilibj2/command/button/Button.java

@@ -17,8 +17,6 @@ import java.util.function.BooleanSupplier;
  * <p>This class represents a subclass of Trigger that is specifically aimed at buttons on an
  * operator interface as a common use case of the more generalized Trigger objects. This is a simple
  * wrapper around Trigger with the method names renamed to fit the Button object use.
- *
- * <p>This class is provided by the OldCommands VendorDep
  */
 public class Button extends Trigger {
   /**