revert [Explicit]

Author: SergeiPavlov

Diff for: Orm/Xtensive.Orm.Tests.Core/Comparison/ComparerProviderTests.cs

@@ -19,7 +19,6 @@ namespace Xtensive.Orm.Tests.Core.Comparison
   public class ComparerProviderTests
   {
     [Test]
-    [Explicit]
     public void SerializationTest()
     {
       SerializationTest<int[]>();

Diff for: Orm/Xtensive.Orm.Tests.Core/Linq/SerializableExpressionsTest.cs

@@ -18,7 +18,6 @@
 
 namespace Xtensive.Orm.Tests.Core.Linq
 {
-  [Explicit]
   [TestFixture]
   public class SerializableExpressionsTest : ExpressionTestBase
   {

Diff for: Orm/Xtensive.Orm.Tests.Core/Tuples/LongTupleTest.cs

@@ -16,7 +16,6 @@ namespace Xtensive.Orm.Tests.Core.Tuples
   [TestFixture]
   public class LongTupleTest
   {
-    [Explicit]
     [Test]
     public void CombinedTest()
     {

Diff for: Orm/Xtensive.Orm.Tests.Core/Tuples/TupleSerializationTest.cs

@@ -16,7 +16,6 @@ namespace Xtensive.Orm.Tests.Core.Tuples
   public class TupleSerializationTest
   {
     [Test]
-    [Explicit]
     public void BaseTest()
     {
       var tuple = Tuple.Create(1, false);
@@ -26,7 +25,6 @@ public void BaseTest()
     }
 
     [Test]
-    [Explicit]
     public void CombinedTest()
     {
       var t = Tuple.Create(1, false);
@@ -38,7 +36,6 @@ public void CombinedTest()
     }
 
     [Test]
-    [Explicit]
     public void SerializationWithNullValuesTest()
     {
       var t = Tuple.Create(typeof (string), typeof (int));
@@ -48,7 +45,6 @@ public void SerializationWithNullValuesTest()
       Assert.AreEqual(t, CloneBySerialization(t));
     }
 
-    [Explicit]
     [Test]
     public void DifferentialTupleSerializationTest()
     {