Mark ProxyCacheFixture as Obsolete

Author: hazzik

src/NHibernate.Test/NHSpecificTest/NH3954/ProxyCacheFixture.cs

@@ -1,12 +1,13 @@
-using System.Collections.Concurrent;
+using System;
+using System.Collections.Concurrent;
 using System.Reflection;
 using NHibernate.Proxy;
 using NHibernate.Proxy.DynamicProxy;
 using NUnit.Framework;
 
 namespace NHibernate.Test.NHSpecificTest.NH3954
 {
-	[TestFixture, Explicit("Demonstrates bug impact on cache, but which tests will fail is a bit unpredictable")]
+	[TestFixture, Explicit("Demonstrates bug impact on cache, but which tests will fail is a bit unpredictable"), Obsolete]
 	public class ProxyCacheFixture
 	{
 		private ProxyCache _cache;
@@ -152,4 +153,4 @@ public void ProxyCacheNone()
 			Assert.IsFalse(_cache.TryGetProxyType(typeof(Entity2), new[] { typeof(IProxy) }, out result));
 		}
 	}
-}
+}