We went through this in How can there be no-self when there seems to be a self?
We could find a flat out denial of atta only in Sbv I 158 (Pali) and MA 6, MA 62 (Chinese). Yes, there are 100s of suttas saying ‘x is anatta’, ‘y is anatta’, but I’d like to see more examples of ‘There is no atta - full stop’, if you have them.