Remove unused Psalm plugin

Author: loevgaard

composer.json

@@ -27,7 +27,6 @@
         "phpspec/prophecy-phpunit": "^2.0",
         "phpunit/phpunit": "^9.6",
         "psalm/plugin-phpunit": "^0.18",
-        "psalm/plugin-symfony": "^4.0",
         "setono/code-quality-pack": "^2.8.3",
         "shipmonk/composer-dependency-analyser": "^1.8",
         "symfony/console": "^4.4 || ^5.4 || ^6.4 || ^7.0",

psalm.xml

@@ -17,7 +17,6 @@
     </projectFiles>
     <plugins>
         <pluginClass class="Psalm\PhpUnitPlugin\Plugin"/>
-        <pluginClass class="Psalm\SymfonyPsalmPlugin\Plugin"/>
     </plugins>
     <issueHandlers>
         <DeprecatedMethod>