QmlJsTools: Remove pointless call to QAbstractItemModel::reset().

The effect is already achieved by the calls to {begin,end}ResetModel(),
which is the correct way to reset a model.

Change-Id: I1981f6d488dc8dbf4c7bc111aa6d6774bc2f50e0
Reviewed-by: Aurindam Jana <aurindam.jana@digia.com>

src/plugins/qmljstools/qmlconsoleitemmodel.cpp

@@ -60,7 +60,6 @@ QmlConsoleItemModel::~QmlConsoleItemModel()
 void QmlConsoleItemModel::clear()
 {
     beginResetModel();
-    reset();
     delete m_rootItem;
     m_rootItem = new ConsoleItem(0);
     endResetModel();