Delete Table readmes

[AlexanderSchmidtCE]

Refs: #6978

The A11y and PO reviews will only take place after all other DoD steps have been completed by the Developer:

• [x] Meaningful pull request title for the release notes
• [x] Pull request is linked to an issue and all changes relate to the issue
• [x] Tests to protect this code implemented (if applicable)
• [x] Manual test performed successfully (if applicable)
• [x] Documentation or migration has been updated (if applicable)

[github-actions[bot]]

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