Revert Microsoft.DotNet.Runtime.7.x86 version 7.0.20

[stephengillie]

📖 Description

Revert a PR which was supposed to be blocked by my automation's Auth system, but was not due to a requested feature having the state of not yet being implemented.

✅ Checklist

• Signed the Contributor License Agreement
• Linked to an issue (if applicable)
  • Revert New package: Microsoft.DotNet.Runtime.7.x86 version 7.0.20 #374853

📦 Manifest Checklist

• Checked that there aren't other open pull requests for the same manifest update/change
• This PR only modifies one (1) manifest
• Validated manifest locally with winget validate --manifest <path> (validation guide)
• Tested manifest locally with winget install --manifest <path>
• Manifest conforms to the 1.12 schema

Note: <path> is the directory containing the manifest you're submitting.

Microsoft Reviewers: Open in CodeFlow

[wingetbot]

Validation Pipeline Run WinGetSvc-Validation-142-376102-20260518-1

[wingetbot]

Publish pipeline succeeded for this Pull Request. Once you refresh your index, this change should be present.