Adapt tests to lack of query space invalidation

Query space invalidation is not available in 5.1.x, see #1392.

To be squashed

Author: fredericDelaporte

src/NHibernate.Test/Async/SecondLevelCacheTest/InvalidationTests.cs

@@ -120,7 +120,6 @@ public async Task InvalidatesEntitiesAsync()
 				using (var tx = session.BeginTransaction())
 				{
 					await (session.CreateSQLQuery("UPDATE Item SET Name='Test'")
-					       .AddSynchronizedQuerySpace("Item")
 					       .ExecuteUpdateAsync());
 
 					await (tx.CommitAsync());
@@ -133,7 +132,7 @@ public async Task InvalidatesEntitiesAsync()
 
 			///...and one invalidation per commit
 			Assert.That(invalidations, Has.Count.EqualTo(6));
-			Assert.That(invalidations, Has.All.Count.EqualTo(1).And.Contains("Item"));
+			Assert.That(invalidations, Has.All.Contains("Item"));
 		}
 
 		protected override void OnTearDown()

src/NHibernate.Test/SecondLevelCacheTest/InvalidationTests.cs

@@ -108,7 +108,6 @@ public void InvalidatesEntities()
 				using (var tx = session.BeginTransaction())
 				{
 					session.CreateSQLQuery("UPDATE Item SET Name='Test'")
-					       .AddSynchronizedQuerySpace("Item")
 					       .ExecuteUpdate();
 
 					tx.Commit();
@@ -121,7 +120,7 @@ public void InvalidatesEntities()
 
 			///...and one invalidation per commit
 			Assert.That(invalidations, Has.Count.EqualTo(6));
-			Assert.That(invalidations, Has.All.Count.EqualTo(1).And.Contains("Item"));
+			Assert.That(invalidations, Has.All.Contains("Item"));
 		}
 
 		protected override void OnTearDown()