enh: remove simd_nightly feature flag for aarch64
#289
| Job | Run time |
|---|---|
| 23s | |
| 2m 12s | |
| 10m 20s | |
| 2m 14s | |
| 10m 32s | |
| 2m 19s | |
| 10m 32s | |
| 18s | |
| 4m 7s | |
| 1m 41s | |
| 4m 22s | |
| 1m 53s | |
| 2m 58s | |
| 2m 4s | |
| 1m 47s | |
| 1m 44s | |
| 2m 27s | |
| 1m 44s | |
| 1m 35s | |
| 1h 5m 12s |