[DaveLiddament]

Changes

• Delete the obsolete Scrutinizer configuration.
• Remove the Scrutinizer code-quality badge from the README.
• Leave GitHub Actions and all other checks unchanged.

Verification

• Checked tracked repository contents: no remaining Scrutinizer references.
• git diff --check passes.
• No PHP code changed; application tests were not run locally.

This removes the repository-side integration only; it does not change external Scrutinizer or GitHub integration settings.