chore(storybook): remove foundations snapshots

[castastrophe]

Description

I noticed we were taking a few baseline snapshots of our foundations documentation and since these concepts are being validated within the components and we don't ship the foundations code, I thought we could remove these from our baselines.

To-do list

• I have read the contribution guidelines.
• I have updated relevant storybook stories and templates.
• If my change impacts documentation, I have updated the documentation accordingly.
• ✨ This pull request is ready to merge. ✨

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Latest commit: 8c5045d

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Summary

Total size: 1.44 MB^*

🎉 No changes detected in any packages

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PR #4216 has been deployed to Azure Blob Storage: https://spectrumcss.z13.web.core.windows.net/pr-4216/index.html.