Disable test flaky FingerprintSetupTest.FingerprintSetupCancel

FingerprintSetupTest.FingerprintSetupCancel is very flaky on ChromeOS
since 2019/10/16.

https://analysis.chromium.org/p/chromium/flake-portal/flakes/occurrences?key=ag9zfmZpbmRpdC1mb3ItbWVyTQsSBUZsYWtlIkJjaHJvbWl1bUBicm93c2VyX3Rlc3RzQEZpbmdlcnByaW50U2V0dXBUZXN0LkZpbmdlcnByaW50U2V0dXBDYW5jZWwM&show_all_occurrences=1

TBR=tbarzic@chromium.org

Bug: 1015014
Change-Id: Id4210e6317067a5716212a12937ee079f562b4e9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1867198Reviewed-by: Lan Wei <lanwei@chromium.org>
Commit-Queue: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#707041}

chrome/browser/chromeos/login/screens/fingerprint_setup_browsertest.cc

@@ -167,7 +167,7 @@ IN_PROC_BROWSER_TEST_F(FingerprintSetupTest, FingerprintSetupScreenElements) {
       {"fingerprint-setup-impl", "setupFingerprint"});
 }
 
-IN_PROC_BROWSER_TEST_F(FingerprintSetupTest, FingerprintSetupCancel) {
+IN_PROC_BROWSER_TEST_F(FingerprintSetupTest, DISABLED_FingerprintSetupCancel) {
   quick_unlock::EnabledForTesting(true);
   fingerprint_setup_screen_->Show();
   OobeScreenWaiter(FingerprintSetupScreenView::kScreenId).Wait();