Deinitialize prediction tests

Change-Id: Id97c509a7b609f2ba8b081c25712b24b50ec9ecf
diff --git a/quickstep/tests/src/com/android/quickstep/AppPredictionsUITests.java b/quickstep/tests/src/com/android/quickstep/AppPredictionsUITests.java
index 47ce44c..5e20e56 100644
--- a/quickstep/tests/src/com/android/quickstep/AppPredictionsUITests.java
+++ b/quickstep/tests/src/com/android/quickstep/AppPredictionsUITests.java
@@ -79,6 +79,8 @@
 
     @After
     public void tearDown() throws Throwable {
+        AppLaunchTracker.INSTANCE.initializeForTesting(null);
+        PredictionUiStateManager.INSTANCE.initializeForTesting(null);
         mDevice.unfreezeRotation();
     }