Apply fixes from StyleCI

Author: StyleCIBot

src/DQLQueryBuilder.php

@@ -5,7 +5,6 @@
 namespace Yiisoft\Db\Pgsql;
 
 use Yiisoft\Db\Expression\ArrayExpression;
-use Yiisoft\Db\Expression\ExpressionBuilderInterface;
 use Yiisoft\Db\Expression\JsonExpression;
 use Yiisoft\Db\Expression\StructuredExpression;
 use Yiisoft\Db\Pgsql\Builder\ArrayExpressionBuilder;