Don't try any shenannegans when updating NICs

Trying to do this on the VMInstance side had problems because we can't
differentiate the 3 types of migration there. So, just update this in
the API side and hope everything goes well.

This introduces an edge bug: if a VM is using a macvtap SR-IOV device,
and then tries to migrate, and the migrate is aborted, the NIC lists
will be inconsistent.

When I revamp the VMInstance in the future, I should be able to correct
this, but for now we'll have to live with that edgecase.

node-daemon/pvcnoded/VMInstance.py

@@ -34,8 +34,6 @@ import pvcnoded.VMConsoleWatcherInstance as VMConsoleWatcherInstance
 
 import daemon_lib.common as daemon_common
 
-from daemon_lib.vm import update_vm_sriov_nics
-
 
 def flush_locks(zkhandler, logger, dom_uuid, this_node=None):
     logger.out('Flushing RBD locks for VM "{}"'.format(dom_uuid), state='i')
@@ -674,11 +672,6 @@ class VMInstance(object):
         self.logger.out('Acquired write lock for synchronization phase D', state='o', prefix='Domain {}'.format(self.domuuid))
         time.sleep(0.5)  # Time for reader to acquire the lock
 
-        # Update any SR-IOV NIC states now
-        sriov_update_result, sriov_update_error = update_vm_sriov_nics(self.zkhandler, self.domuuid, self.last_currentnode, self.node)
-        if not sriov_update_result:
-            self.logger.out('{}; VM will likely fail to start.'.format(sriov_update_error), state='w', prefix='Domain {}'.format(self.domuuid))
-
         self.state = self.zkhandler.read(('domain.state', self.domuuid))
         self.dom = self.lookupByUUID(self.domuuid)
         if self.dom: