OC-5178: Refactor S3 Parallel Operations to use latest erlware_commons

Currently only re-tools the deletion functions (since that's all that used `erlware_commons` to begin with).  With these refactorings, it should be straightforward to refactor the file metadata retrieval functions to use `erlware_commons`, which will eliminate a lot of code.

I'll push out some further commits with that refactoring in place, but I wanted to get this code out for review as soon as possible.