Remove context from dashboardFeatureProvider

DashboardFeatureProviderImpl is created by using application context,
no need pass context in when get.

Bug: 286764889
Test: m Settings
Change-Id: Ia9672dfd9d3d71f64735cbc5979a6ad57c9429d3

tests/robotests/src/com/android/settings/testutils/FakeFeatureFactory.java

@@ -171,8 +171,9 @@ public class FakeFeatureFactory extends FeatureFactory {
         return powerUsageFeatureProvider;
     }
 
+    @NotNull
     @Override
-    public DashboardFeatureProvider getDashboardFeatureProvider(Context context) {
+    public DashboardFeatureProvider getDashboardFeatureProvider() {
         return dashboardFeatureProvider;
     }