Fix failing TravisCI builds (#4165)

* Update services.yml

* 1

* 2

Author: mondrake

config/services/theme.yml

@@ -16,6 +16,6 @@ services:
       - { name: drupal.command }
   console.theme_uninstall:
     class: Drupal\Console\Command\Theme\UninstallCommand
-    arguments: ['@config.factory', '@theme_handler', '@console.chain_queue']
+    arguments: ['@config.factory', '@theme_handler', '@console.chain_queue', '@console.site', '@console.validator','@module_installer','@console.drupal_api','@console.extension_manager','@app.root']
     tags:
       - { name: drupal.command }

src/Utils/Validator.php

@@ -315,22 +315,6 @@ public function getMissingModules($moduleList)
         return array_diff($moduleList, $modules);
     }
 
-    /**
-     * @param $moduleList
-     * @return array
-     */
-    public function getMissingThemes($moduleList)
-    {
-        
-        $modules = $this->extensionManager->discoverThemes()
-            ->showInstalled()
-            ->showUninstalled()
-            ->showNoCore()
-            ->showCore()
-            ->getList(true);
-
-        return array_diff($moduleList, $modules);
-    }
     /**
      * @param $moduleList
      * @return array