removed check on the returned message from calling an unimplemented method
diff --git a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
index cb92632..7a46a55 100644
--- a/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
+++ b/src/csharp/Grpc.IntegrationTesting/InteropClient.cs
@@ -583,7 +583,6 @@
             var e = Assert.Throws<RpcException>(() => client.UnimplementedCall(new Empty()));
 
             Assert.AreEqual(StatusCode.Unimplemented, e.Status.StatusCode);
-            Assert.AreEqual("", e.Status.Detail);
             Console.WriteLine("Passed!");
         }