[HMA] Removing IContentTypeConfigStore

[b8zhong]

Summary

Removes IContentTypeConfigStore, as requested in the last part of #1688.

Note: I plan to add copyright boilerplate to the currently empty init + bump minor version in a separate PR like you requested here! #1707

Test Plan

N/A

[b8zhong]

CI fails are expected here I believe..

[Dcallies]

Hmm, CI fails are not expected here, and will predict HMA library failures. We need a bumped version which contains the init fix.

This is the same problem that the MLH folks were running into, which you already found the solution to - the missing __init__.py file.

To fix, you'll need to break this up a sequence of PRs:

1. Add __init__.py to storage
2. Version bump
3. Now can remove.

EDIT: Now I'm confused, the storage interface is not in the right place. It's currently at https://github.com/facebook/ThreatExchange/tree/main/python-threatexchange/threatexchange/cli/storage but it should be in https://github.com/facebook/ThreatExchange/tree/main/python-threatexchange/threatexchange/storage

This looks like a mistake I made in review -_-

[Dcallies]

Sigh, this should have been threatexchange.storage.interfaces

[b8zhong]

Hey! I'm around now; do you still want to take over?

(Actually I just saw your edit, good catch I did not realize that lol)

[b8zhong]

(Closing as addressed in #1747 & #1748

[Dcallies]

@b8zhong - didn't quite address! This PR is still needed, I just fixed the underlying stuff for you!

[b8zhong]

There we go, mypy is finally happy

[Dcallies]

Nice!

[b8zhong]

Thanks for merging as always!