Minor IGraphicBufferProducer cleanup changes (2).

We have removed references of IGraphicBufferProducer outside of libgui
so this include is no longer necessary. More information at
go/warren-buffers.

Bug: 342197851
Test: build and run
Flag: com.android.graphics.libgui.flags.wb_consumer_base_owns_bq
Change-Id: I5927402105fef3046b4b912d689f3fc82a0328ae