fix(README.md): remove duplicate caching section

[bryanasdev000]

Description

Remove duplicate paragraph at caching/caching layers section.

Submitter Checklist

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review them:

• Includes unit tests
• Adds integration tests if needed.

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Reviewer Notes

• The code flow looks good.
• Unit tests and or integration tests added.

Release Notes

N/A

[google-cla]

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[bryanasdev000]

Just signed the CLA and I think that the action that is failing is about another thing from main :P