Revert "Reland: Add quick view test for removable usb partitions."

This reverts commit df938b958bad530ce3bfc3d4acccb897b30b5bec.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 631018 as the
culprit for flakes in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/flake/flake-culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyQwsSDEZsYWtlQ3VscHJpdCIxY2hyb21pdW0vZGY5MzhiOTU4YmFkNTMwY2UzYmZjM2Q0YWNjY2I4OTdiMzBiNWJlYww

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.memory/Linux%20ChromiumOS%20MSan%20Tests/11237

Sample Failed Step: non_single_process_mash_browser_tests

Sample Flaky Test: QuickView/FilesAppBrowserTest.Test/openQuickViewRemovablePartitions

Original change's description:
> Reland: Add quick view test for removable usb partitions.
> 
> Bug: 918795
> Change-Id: Id158154b74b9ee45cf799584630bedbcfde526ea
> Reviewed-on: https://chromium-review.googlesource.com/c/1459870
> Commit-Queue: Alli Murray <alliemurray@google.com>
> Reviewed-by: Noel Gordon <noel@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#631018}

Change-Id: I1dbf711061b22382b28c74e83a69ab2c9c4de1c8
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 918795
Reviewed-on: https://chromium-review.googlesource.com/c/1466144
Cr-Commit-Position: refs/heads/master@{#631118}
2 files changed