Update 5.md

Author: gammasoft71

docs/documentation/tips_and_tricks/5.md

@@ -54,7 +54,6 @@ auto main() -> int {
 #include <QApplication>
 #include <QStandardPaths>
 #include <QString>
-#include <QDebug>
 
 #if defined(Q_OS_WIN)
 #include <shlobj.h>