Disable VT on shamu.

Feature code is mostly integrated but not slated for release/support.

Change-Id: I977e949e7e1adc9928f8c47763677f3146b6e1d3
diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index c2e7ec0..899d5eb 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -274,7 +274,7 @@
     <bool name="config_device_volte_available">true</bool>
 
     <!-- Flag specifying whether VoLTE is availasble on device -->
-    <bool name="config_device_vt_available">true</bool>
+    <bool name="config_device_vt_available">false</bool>
 
     <!-- Flag specifying whether WFC over IMS is availasble on device -->
     <bool name="config_device_wfc_ims_available">true</bool>