Revert "Skip ServersTestBootFromVolume for Ironic"

no longer needed, Ironic is fully prepared for BFV tests

This reverts commit 160f3648130d22e75fae10fbf586460365b9b8ea.

Change-Id: I94f87d5af769a28b4d9bc65e2f8f91a9b7f4f61e
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index ffcedd5..c660821 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -157,12 +157,6 @@
     @classmethod
     def skip_checks(cls):
         super(ServersTestBootFromVolume, cls).skip_checks()
-        msg = None
         if not utils.get_service_list()['volume']:
             msg = "Volume service not enabled."
-        # The tests are not launched in upstream and not working with Ironic
-        if (hasattr(CONF.service_available, 'ironic') and
-            CONF.service_available.ironic):
-            msg = "Volume tests are not available for ironic."
-        if msg is not None:
             raise cls.skipException(msg)