Revert "Add verification of knownfailures in the testrunner"

This reverts commit 2a0e16d09c6888b646402582d909467b11e445c0.

Reason for revert: Causes chrome buildbots to break.

Change-Id: I9c9d02e37d20fbf423e73e166616d8e714dfdf18
2 files changed