hwapi: remove unused dependency to QWidget

src/hwapi.cpp

@@ -34,7 +34,7 @@ static const QMap<QString, int> baudrateMap = {
   {"57600"  ,   4}, {"115200" ,   5}
 };
 
-hwapi::hwapi(QWidget *parent) : QObject(parent) {
+hwapi::hwapi(QObject *parent) : QObject(parent) {
     // create or attach shared memory segment
     // !!! The compoment creating the shared memory MUST be ATBQT !!!
     m_sharedMem = SharedMemBuffer::getShm(sizeof(SharedMemBuffer));