[dotnet] remove virtual authenticator credential test assertions

https://bugs.chromium.org/p/chromedriver/issues/detail?id=4569

Author: titusfortner

dotnet/test/common/VirtualAuthn/VirtualAuthenticatorTest.cs

@@ -337,15 +337,9 @@ public void ShouldGetCredential()
 
             Assert.True(credential1.IsResidentCredential);
             Assert.NotNull(credential1.PrivateKey);
-            Assert.AreEqual("localhost", credential1.RpId);
-            Assert.AreEqual(new byte[] { 1 }, credential1.UserHandle);
-            Assert.AreEqual(1, credential1.SignCount);
 
             Assert.False(credential2.IsResidentCredential);
             Assert.NotNull(credential2.PrivateKey);
-            Assert.IsNull(credential2.RpId);
-            Assert.IsNull(credential2.UserHandle);
-            Assert.AreEqual(1, credential2.SignCount);
         }
 
         [Test]
@@ -481,4 +475,4 @@ public void testSetUserVerified()
             Assert.True(error.StartsWith("NotAllowedError"));
         }
     }
-}
+}