Remove redundant Display Options preference category

Bug: 5828787
Change-Id: I7de386eed132edfed912be0d334d3dec863e3308
diff --git a/res/xml/preference_display_options.xml b/res/xml/preference_display_options.xml
index a65010d..4ec31b2 100644
--- a/res/xml/preference_display_options.xml
+++ b/res/xml/preference_display_options.xml
@@ -15,16 +15,13 @@
 -->
 
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
-    <PreferenceCategory
-        android:title="@string/preference_displayOptions">
-        <com.android.contacts.preference.SortOrderPreference
-            android:key="sortOrder"
-            android:title="@string/display_options_sort_list_by"
-            android:dialogTitle="@string/display_options_sort_list_by" />
+    <com.android.contacts.preference.SortOrderPreference
+        android:key="sortOrder"
+        android:title="@string/display_options_sort_list_by"
+        android:dialogTitle="@string/display_options_sort_list_by" />
 
-        <com.android.contacts.preference.DisplayOrderPreference
-            android:key="displayOrder"
-            android:title="@string/display_options_view_names_as"
-            android:dialogTitle="@string/display_options_view_names_as" />
-    </PreferenceCategory>
+    <com.android.contacts.preference.DisplayOrderPreference
+        android:key="displayOrder"
+        android:title="@string/display_options_view_names_as"
+        android:dialogTitle="@string/display_options_view_names_as" />
 </PreferenceScreen>