Deduplicate extra_providers against built-in providers (#147)
#971
| Job | Run time |
|---|---|
| 1m 3s | |
| 55s | |
| 1m 3s | |
| 57s | |
| 1m 30s | |
| 1m 23s | |
| 1m 11s | |
| 1m 47s | |
| 3m 48s | |
| 4m 46s | |
| 4m 38s | |
| 2m 30s | |
| 5m 24s | |
| 30m 55s |