Respect linter rule F811 for trivial re-definition

awx/main/models/events.py

@@ -541,8 +541,7 @@ class JobEvent(BasePlaybookEvent):
                 return
             job = self.job
 
-            from awx.main.models import Host, JobHostSummary  # circular import
-            from awx.main.models import Host, JobHostSummary, HostMetric
+            from awx.main.models import Host, JobHostSummary, HostMetric  # circular import
 
             all_hosts = Host.objects.filter(pk__in=self.host_map.values()).only('id', 'name')
             existing_host_ids = set(h.id for h in all_hosts)

awx/main/utils/common.py

@@ -10,7 +10,6 @@ import os
 import subprocess
 import re
 import stat
-import subprocess
 import urllib.parse
 import threading
 import contextlib

tox.ini

@@ -13,5 +13,5 @@ commands =
   yamllint -s .
 
 [flake8]
-select = F401,F402,F821,F823,F841
+select = F401,F402,F821,F823,F841,F811
 exclude = awx/ui/node_modules,awx/ui/node_modules,env,awx_collection_build