automation: Fix rare u_monitor crash
If a new test started before the last one completed u_monitor would crash
instead of reporting an error.
@@ -88,7 +88,6 @@ def reboot_callback(match, results: TestResults, reporter):
def run_callback(match, results: TestResults, reporter):
'''Handler for an item beginning to run'''
- del reporter
name = match.group(1)
if results.current:
# There shouldn't be any current test case
