tests(base): Remove unused getSchemaDefinitions() from GraphQLTestBase (#1087)

Author: Kingdutch

tests/src/Kernel/GraphQLTestBase.php

@@ -76,20 +76,6 @@ protected function setUp() {
     $this->builder = new ResolverBuilder();
   }
 
-  /**
-   * {@inheritdoc}
-   */
-  protected function getSchemaDefinitions() {
-    return [
-      'default' => [
-        'id' => 'default',
-        'name' => 'default',
-        'path' => 'graphql',
-        'deriver' => 'Drupal\graphql\Plugin\Deriver\PluggableSchemaDeriver',
-      ],
-    ];
-  }
-
   /**
    * {@inheritdoc}
    */