Remove Call from telephony.common

This API is no longer used.

Change-Id: I979480633f4a9eb649585968e984eaad1e57973d
diff --git a/src/com/android/phone/CallGatewayManager.java b/src/com/android/phone/CallGatewayManager.java
index 81bee07..893070b 100644
--- a/src/com/android/phone/CallGatewayManager.java
+++ b/src/com/android/phone/CallGatewayManager.java
@@ -37,8 +37,7 @@
  *
  * <p>When an outgoing call is finally placed in PhoneUtils.placeCall, it uses this class to get the
  * proper number to dial. It also saves an association between the connection object and the gateway
- * data into this class.  This association is later used in CallModeler when building Call objects
- * to send to the UI which require the gateway data to show an alert to users.
+ * data into this class.
  */
 public class CallGatewayManager {
     private static final String LOG_TAG = CallGatewayManager.class.getSimpleName();
@@ -98,8 +97,7 @@
     }
 
     /**
-     * This function sets the current mapping from connection to gatewayInfo so that CallModeler
-     * can request this data when creating Call objects.
+     * This function sets the current mapping from connection to gatewayInfo.
      * @param connection The connection object for the placed outgoing call.
      * @param gatewayInfo Gateway info gathered using getRawGatewayInfo.
      */