Revert "overlay: fix config_tether_apndata defined type"

This reverts commit 4d5d16de394d6757eaf44171f546b99d632c2d4e.
diff --git a/overlay/frameworks/base/core/res/res/values-mcc310-mnc260/config.xml b/overlay/frameworks/base/core/res/res/values-mcc310-mnc260/config.xml
index 96c74b9..dcbba33 100644
--- a/overlay/frameworks/base/core/res/res/values-mcc310-mnc260/config.xml
+++ b/overlay/frameworks/base/core/res/res/values-mcc310-mnc260/config.xml
@@ -35,8 +35,6 @@
          TETHER_DUN_APN.  Value is a comma separated series of strings:
          "name,apn,proxy,port,username,password,server,mmsc,mmsproxy,mmsport,mcc,mnc,auth,type"
          note that empty fields can be ommitted: "name,apn,,,,,,,,,310,260,,DUN" -->
-    <string-array translatable="false" name="config_tether_apndata">
-        <item>T-Mobile Tethering,pcweb.tmobile.com,,,,,,,,,310,260,,DUN</item>
-    </string-array>
+    <string translatable="false" name="config_tether_apndata">T-Mobile Tethering,pcweb.tmobile.com,,,,,,,,,310,260,,DUN</string>
 
 </resources>