test/py: Drop assigning ubman to cons

Now that we have a shorter name, we don't need this sort of thing. Just
use ubman instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/py/tests/test_vpl.py b/test/py/tests/test_vpl.py
index 735e2c3..a269c7c 100644
--- a/test/py/tests/test_vpl.py
+++ b/test/py/tests/test_vpl.py
@@ -23,9 +23,8 @@
         ut_subtest (str): VPL test to be executed (e.g. 'dm platdata_phandle')
     """
     try:
-        cons = ubman
-        cons.restart_uboot_with_flags(['-u', '-k', ut_vpl_subtest.split()[1]])
-        output = cons.get_spawn_output().replace('\r', '')
+        ubman.restart_uboot_with_flags(['-u', '-k', ut_vpl_subtest.split()[1]])
+        output = ubman.get_spawn_output().replace('\r', '')
         assert 'failures: 0' in output
     finally:
         # Restart afterward in case a non-VPL test is run next. This should not