Bug 28854: (follow-up) Remove fields from from bundle items

Bug 28854: (follow-up) Remove fields from from bundle items

This patch removes the itemtype and collection code fields from the
bundle items table.

We will add the itemtype back in at a later date with a new bug as the
display code needs some careful consideration and we felt that doing
that work inline here would be an unrequired blocker.

Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>