Removing legacy calculation of Recents visibility.

- This was causing us to try and launch the Recents activity again after
  docking because the running task was the newly docked task and not
  Recents.

Bug: 28177001
Change-Id: I222e50f6de00a9d7881da2182eebc61564fd3266
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java
index 811687c..d1fc780 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/car/CarStatusBar.java
@@ -178,7 +178,7 @@
         @Override
         public void onTaskStackChanged() {
             SystemServicesProxy ssp = Recents.getSystemServices();
-            ActivityManager.RunningTaskInfo runningTaskInfo = ssp.getTopMostTask();
+            ActivityManager.RunningTaskInfo runningTaskInfo = ssp.getRunningTask();
             mController.taskChanged(runningTaskInfo.baseActivity.getPackageName());
         }
     }