Utils lib: Remove unneeded includes from cpp files

It's a result of a team work consisting of yellow triangle and me.

Change-Id: I8b4812766da70e0785ae71bf0cb71357379e2514
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/libs/utils/macroexpander.cpp

@@ -26,13 +26,10 @@
 #include "macroexpander.h"
 
 #include "algorithm.h"
-#include "fileutils.h"
 #include "commandline.h"
 #include "qtcassert.h"
 #include "stringutils.h"
 
-#include <QCoreApplication>
-#include <QDebug>
 #include <QDir>
 #include <QFileInfo>
 #include <QLoggingCategory>