[commands, documentation] Remove controller replaceme commands (#7053)

wpilibcExamples/src/main/cpp/commands/command2/ReplaceMeCommand2.h

@@ -17,6 +17,9 @@
 class ReplaceMeCommand2
     : public frc2::CommandHelper<frc2::Command, ReplaceMeCommand2> {
  public:
+  /* You should consider using the more terse Command factories API instead
+   * https://docs.wpilib.org/en/stable/docs/software/commandbased/organizing-command-based.html#defining-commands
+   */
   ReplaceMeCommand2();
 
   void Initialize() override;