Remove watermarked setting for SMK

[AetherUnbound]

Fixes

Fixes WordPress/openverse#1280 by @AetherUnbound

Description

Fast-follow to #1003, this PR reverts the watermark change made to the SMK ingestion DAG in order to preserve the primary images. See that PR and WordPress/openverse#1360 for context.

Testing Instructions

Tests should pass, running this DAG locally should generate data which has watermarked=false in the database.

Checklist

• My pull request has a descriptive title (not a vague title like
  Update index.md).
• My pull request targets the default branch of the repository (main) or
  a parent feature branch.
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• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible
  errors.
• I ran the DAG documentation generator (if applicable).

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[krysal]

@AetherUnbound Were the alternative images removed from the Catalog?

Edit: I read the previous PR. Great that it worked! 🎉