Remove xvpvnc console type tests

Support for this Xen based console type is currently being removed from
Nova and as a result should no longer be tested by Tempest.

https://review.opendev.org/#/q/topic:bp/remove-xvpvncproxy

The ServerActionsTestJSON.test_get_vnc_console test is now flattened to
only test the `novnc` console type.

A compute-feature-enabled configurable is not being used here as the
test itself only validated the returned URL and offers zero value,
especially given the lack of Xen coverage in the gate now.

Part of blueprint remove-xvpvncproxy
Change-Id: Ie6182ccd72770be1d2578062b5f5a8bb1267f84d
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 0e469c7..ff50836 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -707,16 +707,13 @@
     @testtools.skipUnless(CONF.compute_feature_enabled.vnc_console,
                           'VNC Console feature is disabled.')
     def test_get_vnc_console(self):
-        # Get the VNC console of type 'novnc' and 'xvpvnc'
-        console_types = ['novnc', 'xvpvnc']
-        for console_type in console_types:
-            if self.is_requested_microversion_compatible('2.5'):
-                body = self.client.get_vnc_console(
-                    self.server_id, type=console_type)['console']
-            else:
-                body = self.client.get_remote_console(
-                    self.server_id, console_type=console_type,
-                    protocol='vnc')['remote_console']
-            self.assertEqual(console_type, body['type'])
-            self.assertNotEqual('', body['url'])
-            self._validate_url(body['url'])
+        if self.is_requested_microversion_compatible('2.5'):
+            body = self.client.get_vnc_console(
+                self.server_id, type='novnc')['console']
+        else:
+            body = self.client.get_remote_console(
+                self.server_id, console_type='novnc',
+                protocol='vnc')['remote_console']
+        self.assertEqual('novnc', body['type'])
+        self.assertNotEqual('', body['url'])
+        self._validate_url(body['url'])