[FS9] Stop using Fs9Host and Fs9Client as CContinuousWorkers

Both were continuous workers since a blocking IDirectPlay8Peer::SendTo()
method was used. Since we use the default async method now, we don't need
the threaded implementation any longer. It still could happen that GUI
blocks for too long, but that would happen also for other simulator drivers.

ref T433

src/plugins/simulator/fs9/directplaypeer.h

@@ -18,7 +18,6 @@
 #include "blackmisc/logcategorylist.h"
 #include <QObject>
 #include <QList>
-#include <QMutex>
 #include <QScopedPointer>
 #include <dplay8.h>
 #include <functional>
@@ -31,13 +30,13 @@ namespace BlackSimPlugin
         //! DirectPlay peer implementation
         //! More information can be found in the DirectX9 SDK documentation
         //! http://doc.51windows.net/Directx9_SDK/?url=/Directx9_SDK/play/dplay.htm
-        class CDirectPlayPeer : public BlackMisc::CContinuousWorker
+        class CDirectPlayPeer : public QObject
         {
             Q_OBJECT
 
         public:
             //! Constructor
-            CDirectPlayPeer(QObject *owner, const BlackMisc::Aviation::CCallsign &callsign);
+            CDirectPlayPeer(QObject *parent, const BlackMisc::Aviation::CCallsign &callsign);
 
             //! Destructor
             virtual ~CDirectPlayPeer();
@@ -91,8 +90,6 @@ namespace BlackSimPlugin
             // We need the Id of the users player, because we are sending packets only to him
             std::atomic<DPNID> m_playerUser = {0}; //!< User player Id
 
-            QMutex m_mutexHostList; //!< Host list mutex
-
             using TCallbackWrapper = CallbackWrapper<CDirectPlayPeer, HRESULT, DWORD, void *>; //!< DirectPlay peer message handler wrapper
             TCallbackWrapper m_callbackWrapper; //!< Callback wrapper
         };