No longer require READ_PHONE_STATE permission for getCallState

Bug: 17510808
Change-Id: I4c10d1440fefc85d777516353e4be5245038ed68
diff --git a/src/com/android/server/telecom/TelecomServiceImpl.java b/src/com/android/server/telecom/TelecomServiceImpl.java
index 566b0c6..2a740a7 100644
--- a/src/com/android/server/telecom/TelecomServiceImpl.java
+++ b/src/com/android/server/telecom/TelecomServiceImpl.java
@@ -401,7 +401,6 @@
      */
     @Override
     public int getCallState() {
-        enforceReadPermission();
         return mCallsManager.getCallState();
     }