Remove QML bundle code

This feature is effectively not maintained, experimental and undocumented.
Consensus on the mailing list is to remove it:

    http://lists.qt-project.org/pipermail/development/2014-December/019384.html

Change-Id: Iaa73b3e90806c338ef81bbd4307ddd2addd37964
Reviewed-by: Christopher Adams <chris.adams@jollamobile.com>