QmlDesigner.PropertyEditor: Remove dead code

Change-Id: Id1d712511bf76c974af458d7661358db16a1dafb
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
QmlDesigner: Remove dead code

Change-Id: I4ef9292c78d3974e9608e2c06329b50e2fa97751
Reviewed-by: Marco Bubke <marco.bubke@digia.com>