Temporarily Remove codecov upload given caveats on codecov/codecov-action action

[richard-cox]

Summary

Contributes to #10663

Occurred changes and/or fixed issues

• See Re-enable upload of coverage files to codecov #11106 for details
• I've kept the upload of coverage artefacts as in, as soon we'll need them again

Checklist

• The PR is linked to an issue and the linked issue has a Milestone, or no issue is needed
• The PR has a Milestone
• The PR template has been filled out
• The PR has been self reviewed
• The PR has a reviewer assigned
• The PR has automated tests or clear instructions for manual tests and the linked issue has appropriate QA labels, or tests are not needed
• The PR has reviewed with UX and tested in light and dark mode, or there are no UX changes

[nwmac]

LGTM

We can look at using the CLI to upload the reports