delete deprecated indices query

src/Query/Compound/IndicesQuery.php

-<?php
-
-/*
- * This file is part of the ONGR package.
- *
- * (c) NFQ Technologies UAB <info@nfq.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace ONGR\ElasticsearchDSL\Query\Compound;
-
-use ONGR\ElasticsearchDSL\BuilderInterface;
-
-/**
- * Represents Elasticsearch "indices" query.
- *
- * @link https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-indices-query.html
- *
- * @deprecated Search on the _index field instead. Will be deleted in 6.0
- */
-class IndicesQuery implements BuilderInterface
-{
-    /**
-     * @var string[]
-     */
-    private $indices;
-
-    /**
-     * @var BuilderInterface
-     */
-    private $query;
-
-    /**
-     * @var string|BuilderInterface
-     */
-    private $noMatchQuery;
-
-    /**
-     * @param string[]         $indices
-     * @param BuilderInterface $query
-     * @param BuilderInterface $noMatchQuery
-     */
-    public function __construct($indices, $query, $noMatchQuery = null)
-    {
-        $this->indices = $indices;
-        $this->query = $query;
-        $this->noMatchQuery = $noMatchQuery;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function getType()
-    {
-        return 'indices';
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function toArray()
-    {
-        if (count($this->indices) > 1) {
-            $output = ['indices' => $this->indices];
-        } else {
-            $output = ['index' => $this->indices[0]];
-        }
-
-        $output['query'] = $this->query->toArray();
-
-        if ($this->noMatchQuery !== null) {
-            if (is_a($this->noMatchQuery, 'ONGR\ElasticsearchDSL\BuilderInterface')) {
-                $output['no_match_query'] = $this->noMatchQuery->toArray();
-            } else {
-                $output['no_match_query'] = $this->noMatchQuery;
-            }
-        }
-
-        return [$this->getType() => $output];
-    }
-}