eBay says they only remove a listing for one of the following reasons:
It violates one of our policies.
It violates a law.
The rights owner of the item requested it is removed.
It's been active on the site for a year or more without any sales Contact eBay if your item was removed.
eBay has the Verified Rights Owner Program that explains this policy. You can find more information about eBay's VeRO program here: VeRO list