Revert "[metrics] Add file output support"

This reverts commit 51a9283984b05511bd98f9bcbd1f2f18900239cc.

Reason for revert: The new test is broken on device.

Bug: 175025360
Bug: 170149255
Change-Id: I94d33f9e3d2203a0323fd5dc34f5a6f3e6147367
14 files changed