Revert "Fix flaky test for DnsResolverTest"

This reverts commit dd9608b7d1147a4eaf36ea634b9fc2f0feca1145.

Reason for revert: This CL made whole test failed.

Bug: 153624005
Bug: 150952393
Bug: 151122313
Merged-In: I083529616dbf80421ea6a322bb57d2bb0f2bca62
Change-Id: I002c39d6535fb31b13bc463812517fe1882f1884
(cherry picked from commit 98015badd01863fa4a79c089f371d9a50f2ae98c)
3 files changed
tree: 83af23fc5f13e5fd1566bc18bb3f3209d1312ab9
  1. tests/