fix : fixed found phpstan errors

Author: prisis

LegacyTagsManager.php

@@ -228,7 +228,7 @@ private function getVersions(array $versions, $symfonyConstraint): array
                 }
             }
 
-            if (! $vers || $versions['splits'][$name] === $vers) {
+            if ($versions['splits'][$name] === $vers || \count($vers) === 0) {
                 unset($versions['splits'][$name]);
             }
         }

Plugin.php

@@ -56,14 +56,6 @@ final class Plugin implements EventSubscriberInterface, PluginInterface
     /** @var string */
     public const PACKAGE_NAME = 'narrowspark/automatic-composer-prefetcher';
 
-    public $providerRepos;
-
-    public $repositoryClasses;
-
-    public $repositories;
-
-    public $config;
-
     /**
      * A Container instance.
      *