Removed unused class alias in BackwardCompatibleTest

Author: ezimuel

tests/Elasticsearch/Tests/BackwardCompatibleTest.php

@@ -80,7 +80,6 @@ public function getClasses()
             ['Elasticsearch\Endpoints\Indices\Flush'],
             ['Elasticsearch\Endpoints\Indices\Refresh'],
             ['Elasticsearch\Endpoints\Indices\Recovery'],
-            ['Elasticsearch\Endpoints\Indices\Field\Get'],
             ['Elasticsearch\Endpoints\Indices\Validate\Query'],
             ['Elasticsearch\Endpoints\Indices\Mapping\Get'],
             ['Elasticsearch\Endpoints\Indices\Mapping\Put'],