Remove default zoom UI from advance setting.

Change-Id: I933699896b00047902661d6be76d28314c325b11
diff --git a/res/xml/advanced_preferences.xml b/res/xml/advanced_preferences.xml
index 333883a..a941f6d 100644
--- a/res/xml/advanced_preferences.xml
+++ b/res/xml/advanced_preferences.xml
@@ -61,6 +61,7 @@
 
     <PreferenceCategory android:title="@string/pref_content_title">
 
+        <!-- Disable Default Zoom
         <ListPreference
                 android:key="default_zoom"
                 android:title="@string/pref_default_zoom"
@@ -68,6 +69,7 @@
                 android:entries="@array/pref_default_zoom_choices"
                 android:entryValues="@array/pref_default_zoom_values"
                 android:dialogTitle="@string/pref_default_zoom_dialogtitle" />
+        -->
 
         <CheckBoxPreference
                 android:key="load_page"