Remove useless code

examples/readout/processor.cxx

@@ -11,15 +11,13 @@
 
 namespace bpo = boost::program_options;
 
-class Processor : public FairMQDevice
+struct Processor : fair::mq::Device
 {
-  public:
     Processor()
     {
         OnData("bp", &Processor::HandleData);
     }
 
-  protected:
     bool HandleData(FairMQMessagePtr& msg, int /*index*/)
     {
         FairMQMessagePtr msg2(NewMessageFor("ps", 0, msg->GetSize()));

examples/readout/readout.cxx

@@ -15,11 +15,8 @@
 
 namespace bpo = boost::program_options;
 
-class Readout : public FairMQDevice
+struct Readout : fair::mq::Device
 {
-  public:
-    Readout() = default;
-
     void InitTask() override
     {
         fMsgSize = fConfig->GetProperty<int>("msg-size");

examples/readout/receiver.cxx

@@ -11,11 +11,8 @@
 
 namespace bpo = boost::program_options;
 
-class Receiver : public FairMQDevice
+struct Receiver : fair::mq::Device
 {
-  public:
-    Receiver() = default;
-
     void InitTask() override
     {
         // Get the fMaxIterations value from the command line options (via fConfig)

examples/readout/sender.cxx

@@ -13,11 +13,8 @@
 
 namespace bpo = boost::program_options;
 
-class Sender : public FairMQDevice
+struct Sender : fair::mq::Device
 {
-  public:
-    Sender() = default;
-
     void Init() override
     {
         fInputChannelName = fConfig->GetProperty<std::string>("input-name");