[HMA] Remove IContentTypeConfigStore from HMA

[haianhng31]

Summary

• This resolves the 3rd part of issue [py-tx][mlh] Move IContentTypeConfigStore from HMA to python-threatexchange #1688
• Delete IContentTypeConfigStore in HMA
• In HMA, import IContentTypeConfigStore from pytx to be included in IUnifiedStore

[Dcallies]

From the CI output, it looks like it's importing threatexchange 1.1.1

This is because our 1.2 version publish failed!

https://github.com/facebook/ThreatExchange/actions/runs/12247017442/job/34164057430

We'll have to fix that before this works

[Dcallies]

I think you are getting a mypy failure here because this might need a missing __init.py__ file in the interfaces directory

[haianhng31]

i don't know why mypy keeps complaining about not finding the module. I have checked:

• threatexchange package is installed
• threatexchange.storage.interfaces is a valid module
• has __init__.py in interfaces directory

[Dcallies]

Okay, I think I fixed the build and package, try re-submitting to see if everything passes again.

[Dcallies]

You have the same problem I fixed in #1718 - the __init__.py doesn't count unless it's non-empty - you'll need to add the copyright header to the __init__.py and then bump the version to release a new version of python-threatexchange. The CI is reading the released package version, not the code in repo (this is intentional, since that's how the production version of HMA works!)

You can confirm that the folder is included by running setup build and then inspecting the content of the build/ directory.

[Dcallies]

You'll need to move this to its own PR, then we'll need to bump the version and release a new bugfix version!