auto-t: remove dbus scan call in SAE autoconnect test

Doing this scan causes issues in the test. Like with other autoconnect
tests we can just use the fact that IWD will always be doing a periodic
scan during start up, so we only need to wait for that to finish before
querying the network list.

autotests/testSAE/autoconnect_test.py

@@ -23,11 +23,9 @@ class Test(unittest.TestCase):
         devices[2].disconnect()
         devices[3].disconnect()
 
-        condition = 'not obj.scanning'
+        condition = 'obj.scanning'
         wd.wait_for_object_condition(device, condition)
 
-        device.scan()
-
         condition = 'not obj.scanning'
         wd.wait_for_object_condition(device, condition)