[MAINTENANCE] Remove DataAsset

[joshua-stauffer]

• [ ] Description of PR changes above includes a link to an existing GitHub issue
• [ ] PR title is prefixed with one of: [BUGFIX], [FEATURE], [DOCS], [MAINTENANCE], [CONTRIB]
• [ ] Code is linted - run invoke lint (uses black + ruff)
• [ ] Appropriate tests and docs have been updated

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