Revert "Enable @PortraitLandscape for testBackground"

This reverts commit b6e2cd8546c76b328aed512c7f67bc0256b326d4.

Reason for revert: b/135567630

Change-Id: I4cd87356177a141c99e3865b8794de58386d0f49
diff --git a/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java b/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
index f02859f..9e3bf2f 100644
--- a/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
+++ b/quickstep/tests/src/com/android/quickstep/TaplTestsQuickstep.java
@@ -208,7 +208,7 @@
 
     @Test
     @NavigationModeSwitch
-    @PortraitLandscape
+//    @PortraitLandscape
     public void testBackground() throws Exception {
         startAppFast(resolveSystemApp(Intent.CATEGORY_APP_CALCULATOR));
         final Background background = mLauncher.getBackground();