There are a few remaining places using stage_raw_{put,delete}() in the codebase

[moodyjon]

This is not a big deal as all the occurrences I found are in migrate7to8.py.

https://github.com/lbryio/hub/search?q=stage_raw_delete
https://github.com/lbryio/hub/search?q=stage_raw_put

This came to my attention because the lbry-sdk tests need some work due to the rename stage_put -> stash_put.