Remove useless timezone import

1 job for master in 4 minutes and 24 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #998
test

00:04:24

 
Name Stage Failure
failed
test Test There is an unknown failure, please try again

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Ran 42 tests in 63.427s

FAILED (failures=1)
Custom settings failed
Creating test database for alias 'default'...
Destroying test database for alias 'default'...
ERROR: Job failed: exit code 1