Some minor dfp api changes related to creatives

Hello, DFP API developers! We just wanted to let you know of some minor DFP API changes that affect all versions of the API. Most likely these won't affect your integration with DFP, but we're announcing them here for transparency. Deleted line item creative associations (LICAs) are no longer persisted Deleted LICAs are no longer persisted in the product. This will affect all versions of the API. There are two things to be aware of as a result of this. First,...