TrafficControllerTest - trivial simplification Bug: 235286176 Test: TreeHugger Signed-off-by: Maciej Żenczykowski <maze@google.com> Change-Id: I25158126c968707f44f595f731547a8bd9bb503d (cherry picked from commit ced3531ad5124234909b2e29d46b222197739134) Merged-In: I25158126c968707f44f595f731547a8bd9bb503d