Remove references to Scrutinizer

This whole setup seems to have been broken for some five years now (at
least that’s how old the “current” results are). I’m not sure how much
it was used before then – I don’t remember looking at these results very
often (but that might have been a personal preference thing). Note that
Wikibase also has some test coverage reporting in Wikimedia CI again
these days, courtesy of T288396.

Bug: T391437
Change-Id: I149d3011e9c3c9a83f43fbbb12a2a4c826611b4f

Author: lucaswerkmeister

.gitattributes

@@ -1,7 +1,6 @@
 .gitattributes export-ignore
 .github/ export-ignore
 .gitignore export-ignore
-.scrutinizer.yml export-ignore
 composer.json export-ignore
 docs export-ignore
 phpmd.xml export-ignore

.github/workflows/scrutinize.yaml

@@ -1,8 +1,6 @@
 # Wikibase DataModel
 
 [![Build Status](https://github.com/wmde/WikibaseDataModel/actions/workflows/lint-and-test.yaml/badge.svg?branch=master)](https://github.com/wmde/WikibaseDataModel/actions/workflows/lint-and-test.yaml)
-[![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/wmde/WikibaseDataModel/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/wmde/WikibaseDataModel/?branch=master)
-[![Code Coverage](https://scrutinizer-ci.com/g/wmde/WikibaseDataModel/badges/coverage.png?b=master)](https://scrutinizer-ci.com/g/wmde/WikibaseDataModel/?branch=master)
 [![Download count](https://poser.pugx.org/wikibase/data-model/d/total.png)](https://packagist.org/packages/wikibase/data-model)
 [![License](https://poser.pugx.org/wikibase/data-model/license.svg)](https://packagist.org/packages/wikibase/data-model)
 
@@ -89,7 +87,6 @@ Daniel Kinzler and Jeroen De Dauw.
 * [Wikibase DataModel on Packagist](https://packagist.org/packages/wikibase/data-model)
 * [Wikibase DataModel on Ohloh](https://www.ohloh.net/p/wikibasedatamodel/)
 * [Wikibase DataModel on TravisCI](https://travis-ci.org/wmde/WikibaseDataModel)
-* [Wikibase DataModel on ScrutinizerCI](https://scrutinizer-ci.com/g/wmde/WikibaseDataModel)
 * [Wikibase DataModel on Wikimedia's Phabricator](https://phabricator.wikimedia.org/project/view/920/)
 
 ## See also