chore: cleanup orphaned content files (#9964)

Co-authored-by: jcanalesluna <56018501+jcanalesluna@users.noreply.github.com>

src/data/roadmaps/design-system/content/creating-core-components@jggrr5nZOe6FY3ZrZJTOw.md

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-# Tooling
-
-To make things efficient for anyone using your design system, make tooling essential. Find the workflows where you can integrate things with the tools people use. This helps organically spread your design system and make it crucial to people’s daily work.

src/data/roadmaps/design-system/content/placement--clearance-guidance@7n61402xwhIgJ7dPHg8q7.md

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-# Placement and Clearance Guidance
-
-Your logo must come with clear guidance on how to place it and how to preserve its space since it lives along with other content.