Remove code that check for dashboard feature.

- remove DashboardFeatureProvider.isEnabled() and all relating code
and tests.

Bug: 35764802
Test: make RunSettingsRoboTests
Change-Id: If7796677abc8904b7436525836d50cdef38e37a4

src/com/android/settings/dashboard/DashboardFeatureProviderImpl.java

@@ -68,11 +68,6 @@ public class DashboardFeatureProviderImpl implements DashboardFeatureProvider {
         mMetricsFeatureProvider = FeatureFactory.getFactory(context).getMetricsFeatureProvider();
     }
 
-    @Override
-    public boolean isEnabled() {
-        return true;
-    }
-
     @Override
     public DashboardCategory getTilesForCategory(String key) {
         return mCategoryManager.getTilesByCategory(mContext, key);
@@ -81,9 +76,6 @@ public class DashboardFeatureProviderImpl implements DashboardFeatureProvider {
     @Override
     public List<Preference> getPreferencesForCategory(Activity activity, Context context,
             int sourceMetricsCategory, String key) {
-        if (!isEnabled()) {
-            return null;
-        }
         final DashboardCategory category = getTilesForCategory(key);
         if (category == null) {
             Log.d(TAG, "NO dashboard tiles for " + TAG);
@@ -177,7 +169,7 @@ public class DashboardFeatureProviderImpl implements DashboardFeatureProvider {
     @Override
     public ProgressiveDisclosureMixin getProgressiveDisclosureMixin(Context context,
             DashboardFragment fragment) {
-        return new ProgressiveDisclosureMixin(context, this, mMetricsFeatureProvider, fragment);
+        return new ProgressiveDisclosureMixin(context, mMetricsFeatureProvider, fragment);
     }
 
     @Override