QmlProjectRunConfiguration: Remove unused member variable

Change-Id: I2ab24231dd278175f25c1a9db1f1f84ca831b5ea
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h

@@ -111,7 +111,6 @@ private:
     // absolute path to selected main script (if being used)
     QString m_mainScriptFilename;
 
-    int m_qtVersionId;
     QString m_scriptFile;
     QString m_qmlViewerArgs;