- refactor application setting to use paged list view
- refactor sound setting to use paged list view
- removed unused UI classes
- ui changes according to spec

Test: manually verified
Change-Id: Iace0f88ed627621682d0e6c0cb0c07badc466076
diff --git a/src/com/android/car/settings/system/AboutSettingsActivity.java b/src/com/android/car/settings/system/AboutSettingsActivity.java
index a2ea9ba..8f630f7 100644
--- a/src/com/android/car/settings/system/AboutSettingsActivity.java
+++ b/src/com/android/car/settings/system/AboutSettingsActivity.java
@@ -19,9 +19,11 @@
 import android.os.Build;
 
 import com.android.car.settings.common.ListSettingsActivity;
+import com.android.car.settings.common.NoDividerItemDecoration;
 import com.android.car.settings.common.SimpleTextLineItem;
 import com.android.car.settings.common.TypedPagedListAdapter;
 import com.android.car.settings.R;
+import com.android.car.view.PagedListView;
 import com.android.settingslib.DeviceInfoUtils;
 
 import java.util.ArrayList;
@@ -47,4 +49,9 @@
                 getText(R.string.build_number), Build.DISPLAY));
         return lineItems;
     }
+
+    @Override
+    public PagedListView.Decoration getDecoration() {
+        return new NoDividerItemDecoration(this);
+    }
 }