Eradicate Java-style iterators and mark the module free of them

Java-style iterators are scheduled for deprecation, or at the very
least banned from use in Qt code.

Change-Id: If50aade7e5a57f247ec8c0e77103dfd2d2160c3c
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>