Revert #8501 and #8624 (#8716)

* Revert "Switch to new ao quant api for 8da4w (#8501)"

This reverts commit f3fc096a2df3c7ea8667f1598ca880146116c6a6.

* Revert "Use to_edge_lower_and_transform for XNNPack (#8624)"

This reverts commit b5344c17d6069f6fbe3b28db7bf67376cc2fb629.

#8624 caused concerning test failure internally -- out of bounds array access. #8501 depends on it per author