fix linter

Author: KirillKurdyukov

src/EfCore.Ydb/src/Query/Internal/YdbQuerySqlGenerator.cs

@@ -1,6 +1,5 @@
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Linq.Expressions;
 using Microsoft.EntityFrameworkCore.Query;