Fix issue with app launch from CarNavigationBar.

Seems like mCurrentPackage name can get stale and the optimization
to cache is isn't all that needed so remove it in the name of app
launch reliability.

Bug: 27505472
Change-Id: I641284c1392f8ff1f392f8dbf2c31177a64b4326

packages/SystemUI/src/com/android/systemui/statusbar/car/CarNavigationBarController.java

@@ -71,7 +71,6 @@ class CarNavigationBarController {
     private List<CarNavigationButton> mNavButtons = new ArrayList<CarNavigationButton>();
 
     private int mCurrentFacetIndex;
-    private String mCurrentPackageName;
     private SparseBooleanArray mFacetHasMultipleAppsCache = new SparseBooleanArray();
 
     public CarNavigationBarController(Context context,
@@ -84,7 +83,6 @@ class CarNavigationBarController {
     }
 
     public void taskChanged(String packageName) {
-        mCurrentPackageName = packageName;
         // If the package name belongs to a filter, then highlight appropriate button in
         // the navigation bar.
         if (mFacetPackageMap.containsKey(packageName)) {
@@ -298,12 +296,6 @@ class CarNavigationBarController {
             return;
         }
 
-        // Don't launch the lens picker if it's already running and the
-        // user clicks the same facet
-        if (packageName.equals(mCurrentPackageName) && index == mCurrentFacetIndex) {
-            return;
-        }
-
         intent.putExtra(EXTRA_FACET_CATEGORIES, mFacetCategories.get(index));
         intent.putExtra(EXTRA_FACET_PACKAGES, mFacetPackages.get(index));
         // The facet is identified by the index in which it was added to the nav bar.