Update tile color from using accent to colorControlNormal.

Also remove some unused code
Bug: 33759208
Test: visual

Change-Id: I0a019bf6b514564f9e6e844de8a6b75b2ca69cc7
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 010c515..5aacb0a 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -3169,7 +3169,7 @@
 
         <activity android:name=".Settings$SupportDashboardActivity"
                   android:label="@string/page_tab_title_support"
-                  android:icon="@drawable/ic_help_24dp">
+                  android:icon="@drawable/ic_support_24dp">
             <intent-filter android:priority="0">
                 <action android:name="com.android.settings.action.SETTINGS"/>
             </intent-filter>