Bug 17202: Don't report an item in a collection if the collection doesn't exist

Bug 17202: Don't report an item in a collection if the collection doesn't exist

This simply adds a JOIN to the collections table - if the collection is gone
then the item is not considered to be in a rotating collection

Also remove variable to store the return that is not used later

To test:
Create a rotating collection
Add an item
Delete the rotating collection
View the db (SELECT * FROM collections_tracking;)
The item is still in the collection
Enable AutomaticItemReturn
Checkin the item at a branch not its home
The item does not get transferred home
Apply patch
Restart all the things
Check in the item, it is transferred home

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>