iotests.py: Fix VM.run_job

log() is in the current module, there is no need to prefix it.  In fact,
doing so may make VM.run_job() unusable in tests that never use
iotests.log() themselves.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

tests/qemu-iotests/iotests.py

@@ -552,7 +552,7 @@ class VM(qtest.QEMUQtestMachine):
                     elif status == 'null':
                         return error
                 else:
-                    iotests.log(ev)
+                    log(ev)
 
     def node_info(self, node_name):
         nodes = self.qmp('query-named-block-nodes')