chore: remove sonar cloud link from readme

[Junjiequan]

Description

This PR is to trigger build and deploy action

Motivation

Background on use case, changes needed

Fixes:

Please provide a list of the fixes implemented in this PR

• Items added

Changes:

Please provide a list of the changes implemented by this PR

• changes made

Tests included

• Included for each change/fix?
• Passing? (Merge will not be approved unless this is checked)

Documentation

• swagger documentation updated [required]
• official documentation updated [nice-to-have]

official documentation info

If you have updated the official documentation, please provide PR # and URL of the pages where the updates are included

Backend version

• Does it require a specific version of the backend
• which version of the backend is required:

Summary by Sourcery

Documentation:

• Clean up README by removing the SonarCloud project badge link.

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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