Cleanup raw extrinsic metadata:
```
delete from raw_extrinsic_metadata
where id like 'swh:1:snp:%'
and (format = 'replicate-npm-package-json'
or format = 'pypi-project-json'
);
```
plan (from staging-swh):
```
Delete on raw_extrinsic_metadata (cost=0.00..2366.00 rows=1 width=6)
-> Seq Scan on raw_extrinsic_metadata (cost=0.00..2366.00 rows=1 width=6)
Filter: ((id ~~ 'swh:1:snp:%'::text) AND ((format = 'replicate-npm-package-json'::text) OR (format = 'pypi-project-json'::text)))
(3 rows)
```