Revert "Fix TypedFastBitSet.flip_all()"
Revert "Fix TypedFastBitSet.flip_all()"

This reverts commit db08e5819fe90886dbd335867a842ac1e81de5e2.

fredludlow/ngl,fredludlow/ngl,fredludlow/ngl,arose/ngl,j0kaso/ngl,j0kaso/ngl,arose/ngl,arose/ngl,j0kaso/ngl,arose/ngl,fredludlow/ngl