nir: Get rid of __[u]int64_to_fp32() and __fp32_to_[u]int64()

Those are now handled by nir_lower_int64() which has native NIR
implementations.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5588>
2 files changed