Revert "Add metrics of SW static routing API evaluation time for subresources"

This reverts commit e6c79c02e389e9f8c1b6bdf44fc33a867cf2a895.

Reason for revert: Failing at Network Service Linux bot crbug.com/355104619

Bug: 355104619

Original change's description:
> Add metrics of SW static routing API evaluation time for subresources
>
> This CL adds metrics to measure the total time spent on router
> evaluation of ServiceWorker static routing API evaluation time for
> subresources.
>
> Change-Id: Ic33810c086999bc6ef741bdce830b6c7eeab84a5
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5717591
> Reviewed-by: Yoshisato Yanagisawa <yyanagisawa@chromium.org>
> Reviewed-by: Shunya Shishido <sisidovski@chromium.org>
> Reviewed-by: Takashi Toyoshima <toyoshim@chromium.org>
> Commit-Queue: Keita Suzuki <suzukikeita@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1331824}

Change-Id: Iae9e95e7637e44f7ca822871a181bc0811403014
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5735637
Owners-Override: Tsuyoshi Horo <horo@chromium.org>
Commit-Queue: Tsuyoshi Horo <horo@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Keita Suzuki <suzukikeita@chromium.org>
Reviewed-by: Shunya Shishido <sisidovski@chromium.org>
Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1332155}