SIP: remove unused import.

Change-Id: I6d7c7c6ab90bdec4c8adb060e88e48cac20e85a1
diff --git a/src/com/android/phone/SipBroadcastReceiver.java b/src/com/android/phone/SipBroadcastReceiver.java
index a5756f0..f12fad6 100644
--- a/src/com/android/phone/SipBroadcastReceiver.java
+++ b/src/com/android/phone/SipBroadcastReceiver.java
@@ -18,7 +18,6 @@
 
 import com.android.internal.telephony.CallManager;
 import com.android.internal.telephony.PhoneFactory;
-import com.android.internal.telephony.sip.SipPhoneProxy;
 import com.android.internal.telephony.sip.SipPhone;
 
 import android.content.BroadcastReceiver;