Fix undefined tol and remove unused variable in QR and LQ pullback
#221
| Job | Run time |
|---|---|
| 1h 20m 2s | |
| 3h 11m 35s | |
| 1h 39m 46s | |
| 1h 0m 57s | |
| 2h 58m 10s | |
| 1h 7m 46s | |
| 1h 13m 30s | |
| 1h 54m 2s | |
| 1h 17m 3s | |
| 15h 42m 51s |