Disabling incoming call function.

Also fix un-used imports in several files.

Change-Id: Ife01674b2a1fe807a8d0b23c984e46715fc08908
diff --git a/src/com/android/phone/PhoneGlobals.java b/src/com/android/phone/PhoneGlobals.java
index 49332d1..865ad75 100644
--- a/src/com/android/phone/PhoneGlobals.java
+++ b/src/com/android/phone/PhoneGlobals.java
@@ -762,7 +762,8 @@
     }
 
     private static String getCallScreenClassName() {
-        return InCallScreen.class.getName();
+        //InCallScreen.class.getName();
+        return "blah";
     }
 
     /**
@@ -781,7 +782,7 @@
         }
 
         try {
-            startActivity(createInCallIntent());
+            //startActivity(createInCallIntent());
         } catch (ActivityNotFoundException e) {
             // It's possible that the in-call UI might not exist (like on
             // non-voice-capable devices), so don't crash if someone