clean up USER_OWNER in telephony service

Change-Id: I188c7fe3e38691979b5431a4efc68b5206d1c02e
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 6886eb1..ba13365 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -258,7 +258,7 @@
     <!-- Title of the progress dialog displayed while updating Call settings -->
     <string name="updating_title">Call settings</string>
     <!-- Toast in Call settings when asked to launch settings for a secondary user -->
-    <string name="call_settings_primary_user_only">Call settings can only be changed by the primary user.</string>
+    <string name="call_settings_admin_user_only">Call settings can only be changed by the admin user.</string>
     <!-- Title of the "Call settings" settings screen, with a text label identifying which SIM the settings are for. -->
     <string name="call_settings_with_label">Settings (<xliff:g id="subscriptionlabel" example="Mock Carrier">%s</xliff:g>)</string>
     <!-- Title of the alert dialog displayed if an error occurs while updating Call settings -->