Ignoring testQuickSwitchToPreviousAppForTablet

It fails on some targets

Test: presubmit
Flag: N/A
Bug: 318544733
Change-Id: Ia6e34f81942b3e911b637cd66eae4362e633eee5

quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java

@@ -55,6 +55,7 @@ import com.android.quickstep.views.RecentsView;
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -295,11 +296,9 @@ public class TaplTestsQuickstep extends AbstractQuickStepTest {
         launchedAppState.switchToOverview();
     }
 
-    // Staging; will be promoted to presubmit if stable
-    @TestStabilityRule.Stability(flavors = LOCAL | PLATFORM_POSTSUBMIT)
-
     @Test
     @TaskbarModeSwitch
+    @Ignore // b/314873201
     public void testQuickSwitchToPreviousAppForTablet() throws Exception {
         assumeTrue(mLauncher.isTablet());
         startTestActivity(2);