Revert "Bug 945222 - Update web-platform-tests expected data to revision e37ef9f403ddcdb50359adc8b9b2641a0ef3545b"

This reverts commit ef10f6ce9d8eeba6ab308d34ec57088e18c786e8.
Bug 945222 - Update web-platform-tests expected data to revision e37ef9f403ddcdb50359adc8b9b2641a0ef3545b