libs/cplusplus: remove unneeded #includes

Change-Id: Iadd8ace8a3870a9b0046dc65bf00d7e702e15b97
Reviewed-by: hjk <qthjk@ovi.com>

src/libs/cplusplus/OverviewModel.cpp

@@ -35,9 +35,6 @@
 #include <Literals.h>
 #include <Symbols.h>
 
-#include <QFile>
-#include <QDebug>
-
 using namespace CPlusPlus;
 
 OverviewModel::OverviewModel(QObject *parent)