Merge "Remove background visibility check now that's in testbase." into main

tests/FlickerTests/src/com/android/server/wm/flicker/activityembedding/open/OpenTrampolineActivityTest.kt

@@ -62,14 +62,6 @@ class OpenTrampolineActivityTest(flicker: LegacyFlickerTest) : ActivityEmbedding
         }
     }
 
-    /** Assert the background animation layer is never visible during bounds change transition. */
-    @Presubmit
-    @Test
-    fun backgroundLayerNeverVisible() {
-        val backgroundColorLayer = ComponentNameMatcher("", "Animation Background")
-        flicker.assertLayers { isInvisible(backgroundColorLayer) }
-    }
-
     /** Trampoline activity should finish itself before the end of this test. */
     @Presubmit
     @Test