adding deprecated query engine is not required

users use either the old config or the new config and not a mix of both unless they decide to do something like that on themselves but then they are on their own ;)

src/config/datatables.php

@@ -41,8 +41,6 @@
     'engines'        => [
         'eloquent'      => \Yajra\DataTables\EloquentDataTable::class,
         'query-builder' => \Yajra\DataTables\QueryBuilderDataTable::class,
-        // @deprecated, will be removed in a next release
-        'query'         => \Yajra\DataTables\QueryBuilderDataTable::class,
         'collection'    => \Yajra\DataTables\CollectionDataTable::class,
     ],