refactor(tvix/castore/fs/tests): drop unused args r/7259

There's no need to pass in an unused directory service into the
populate_blob_* method, and considering we have one or two invocation of
each of these, we don't really gain much from having all these functions
follow the same structure, at least for now.

Also, update some function names to better describe what they're doing.

Change-Id: I92f680745c157fb0a602b07342f8838bfad23ecd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10411
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI

0 files changed, 0 insertions, 0 deletions