George Necula 6bfbb4593a Remove old ducc_fft custom call.
Starting in June 2023 we have switched the CPU lowering for FFT to use
the new custom call dynamic_ducc_fft. We are now out of the backwards
compatibility window and we remove the old ducc_fft.

We need to keep dynamic_ducc_fft a little bit longer (May 2024).

PiperOrigin-RevId: 627981921
2024-04-25 00:29:11 -07:00
..
2024-04-25 00:29:11 -07:00
2024-04-25 00:29:11 -07:00