[sheriff] Disable KioskAppManagerTest.RemoveApp.

TBR=fdoray@chromium.org

Bug: 1090937
Change-Id: Ie0db29a4028ce87458ca16c32509ac9e56b9001e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2229017Reviewed-by: François Doray <fdoray@chromium.org>
Commit-Queue: François Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#774777}

chrome/browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc

@@ -709,8 +709,8 @@ IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, DownloadNewApp) {
   RunAddNewAppTest(kTestLocalFsKioskApp, "1.0.0", kTestLocalFsKioskAppName, "");
 }
 
-// Disabled: https://crbug.com/1044417
-IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, RemoveApp) {
+// Flaky https://crbug.com/1090937 (previous bug: https://crbug.com/1044417)
+IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, DISABLED_RemoveApp) {
   // Add a new app.
   RunAddNewAppTest(kTestLocalFsKioskApp, "1.0.0", kTestLocalFsKioskAppName, "");
   KioskAppManager::AppList apps;