Remove some Windows debug code

src/main.cpp

@@ -90,8 +90,6 @@ void logMessageHandler(QtMsgType type, const QMessageLogContext& ctxt, const QSt
 #endif
 }
 
-#include <windows.h>
-
 int main(int argc, char *argv[])
 {
     qInstallMessageHandler(logMessageHandler); // Enable log as early as possible
@@ -145,10 +143,6 @@ int main(int argc, char *argv[])
     qDebug() << "built on: " << __TIME__ << __DATE__ << "(" << TIMESTAMP << ")";
     qDebug() << "commit: " << GIT_VERSION << "\n";
 
-    long unsigned int bufsize=100;
-    char buf[100];
-    GetUserNameA(buf, &bufsize);
-
 #if defined(Q_OS_MACX) && defined(QT_RELEASE)
     osx::moveToAppFolder();
 #endif