QmlDesigner: Remove test file for qml puppet build in windows

Task-number: QTCREATORBUG-10293
Change-Id: I45a2b9d8428672904cb61ee826b08132e28eff5a
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>