Revert "Disabled flaky `fileDisplayWithoutDriveThenDisable` testcase"

This reverts commit 8172d98f.

Reason for revert: wrong culprit, change that caused this issue was
CL:2214908 and that was reverted.

Original change's description:
> Disabled flaky `fileDisplayWithoutDriveThenDisable` testcase
> 
> TBR=adanilo@chromium.org
> 
> Bug: 1097013
> Change-Id: I1ed5abccd73b2c8c2ad71dccca8fde5863232d15
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2253762
> Reviewed-by: Andy Paicu <andypaicu@chromium.org>
> Commit-Queue: Andy Paicu <andypaicu@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#780258}

TBR=andypaicu@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 1097013
Change-Id: Id5232de5fe52efe7bdb508280b40e54124fb72b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2259872Reviewed-by: Noel Gordon <noel@chromium.org>
Reviewed-by: Alex Danilo <adanilo@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#781203}

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

@@ -253,8 +253,7 @@ WRAPPED_INSTANTIATE_TEST_SUITE_P(
             .DontMountVolumes(),
         TestCase("fileDisplayWithoutVolumesThenMountDrive").DontMountVolumes(),
         TestCase("fileDisplayWithoutDrive").DontMountVolumes(),
-        // Test is failing (crbug.com/1097013)
-        // TestCase("fileDisplayWithoutDriveThenDisable").DontMountVolumes(),
+        TestCase("fileDisplayWithoutDriveThenDisable").DontMountVolumes(),
         TestCase("fileDisplayMountWithFakeItemSelected"),
         TestCase("fileDisplayUnmountDriveWithSharedWithMeSelected"),
         TestCase("fileDisplayUnmountRemovableRoot"),