Debugger: Modernize

modernize-use-auto
modernize-use-nullptr
modernize-use-override
modernize-use-using
modernize-use-default-member-init
modernize-use-equals-default

Change-Id: I91a6874f0d7b94e9079ab4ef07c23c60c80be9c0
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/debugger/console/consoleitemmodel.cpp

@@ -38,8 +38,7 @@ namespace Internal {
 ///////////////////////////////////////////////////////////////////////
 
 ConsoleItemModel::ConsoleItemModel(QObject *parent) :
-    Utils::TreeModel<>(new ConsoleItem, parent),
-    m_maxSizeOfFileName(0), m_canFetchMore(false)
+    Utils::TreeModel<>(new ConsoleItem, parent)
 {
     clear();
 }