Bug 1564507 - Remove 'ZZ' from AccessibilityTest. r=agi

Now that we don't rely on XPCOM accessibility anymore we shouldn't see
intermittents with accessibility on.

Differential Revision: https://phabricator.services.mozilla.com/D61773

--HG--
extra : moz-landing-system : lando

mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/AccessibilityTest.kt

@@ -48,8 +48,7 @@ const val DISPLAY_HEIGHT = 640
 @RunWith(AndroidJUnit4::class)
 @MediumTest
 @WithDisplay(width = DISPLAY_WIDTH, height = DISPLAY_HEIGHT)
-// TODO: Bug 1564507, to work around it we run AccessibilityTest at the end
-class ZZAccessibilityTest : BaseSessionTest() {
+class AccessibilityTest : BaseSessionTest() {
     lateinit var view: View
     val screenRect = Rect(0, 0, DISPLAY_WIDTH, DISPLAY_HEIGHT)
     val provider: AccessibilityNodeProvider get() = view.accessibilityNodeProvider