Make cylc remove flow-aware and extend to historical tasks
#8157
| Job | Run time |
|---|---|
| 13m 8s | |
| 15m 25s | |
| 11m 32s | |
| 14m 17s | |
| 20m 54s | |
| 6m 33s | |
| 5m 2s | |
| 7m 3s | |
| 19m 20s | |
| 17m 53s | |
| 19s | |
| 2h 11m 26s |