Remove regularly printing the task information. (#132)

Task information can be retrieved via serial command line. The regular
output is not necessary any more and makes it difficult to use the
serial command line.

For example using

    list

Author: dhebbeker

src/main.cpp

@@ -34,13 +34,6 @@ void loop()
 
     serial_port::readAndHandleInput();
 
-    for (auto task : device::tasks)
-    {
-        serial_port::cout << task.second.getLabel() << " : " << std::boolalpha << task.second.isRunning()
-                          << std::noboolalpha << "   with " << task.second.getRecordedDuration().count() << " s" << std::endl;
-    }
-    serial_port::cout << "_\r" << std::endl;
-
     std::this_thread::yield();
     using namespace std::chrono_literals;
     std::this_thread::sleep_for(100ms);