Remove TimeOnly/DateOnly reading from test

The test is not suppose to be about DateOnly/TimeOnly
Such tests will be created where other types are checked

Author: alex-kulakov

Orm/Xtensive.Orm.Tests/Storage/SchemaSharing/EntityManipulation/SimpleEntityManipulationTest.cs

@@ -10,7 +10,6 @@
 using NUnit.Framework;
 using Xtensive.Core;
 using Xtensive.Orm.Configuration;
-using Xtensive.Orm.Tests.Model.UselessTypeInTheMiddleTestModel;
 using model = Xtensive.Orm.Tests.Storage.SchemaSharing.EntityManipulation.Model;
 
 namespace Xtensive.Orm.Tests.Storage.SchemaSharing.EntityManipulation
@@ -405,23 +404,11 @@ private void Update(Session session, Key[] createdKeys, int initialCountOfEntiti
       Assert.That(a.DatabaseName, Is.EqualTo(databaseAndSchema.First));
       Assert.That(a.SchemaName, Is.EqualTo(databaseAndSchema.Second));
 
-      var now = DateTime.UtcNow;
-
       a.Text = updatedText;
-#if NET6_0_OR_GREATER //DO_DATEONLY
-      var dateOnly = DateOnly.FromDateTime(now);
-      var timeOnly = TimeOnly.FromDateTime(now);
-      a.DateOnly = dateOnly;
-      a.TimeOnly = timeOnly;
-#endif
       session.SaveChanges();
 
       Assert.That(session.Query.All<model.Part1.TestEntity1>().Count(), Is.EqualTo(initialCountOfEntities + 1));
       Assert.That(session.Query.All<model.Part1.TestEntity1>().FirstOrDefault(e => e.Text == updatedText), Is.Not.Null);
-#if NET6_0_OR_GREATER //DO_DATEONLY
-      Assert.AreEqual(session.Query.All<model.Part1.TestEntity1>().FirstOrDefault(e => e.Text == updatedText).DateOnly, dateOnly);
-      Assert.AreEqual(session.Query.All<model.Part1.TestEntity1>().FirstOrDefault(e => e.Text == updatedText).TimeOnly, timeOnly);
-#endif
       Assert.That(session.Query.All<model.Part1.TestEntity1>().FirstOrDefault(e => e.Text == text), Is.Null);
       Assert.That(
         session.Query.All<model.Part1.TestEntity1>()