Remove unused import com.android.internal.telephony.Call

Change-Id: I491dc175b29f98900b79e801ff3fb4f116752668
diff --git a/src/com/android/bluetooth/hfp/HeadsetPhoneState.java b/src/com/android/bluetooth/hfp/HeadsetPhoneState.java
index c490ad0..9559c77 100644
--- a/src/com/android/bluetooth/hfp/HeadsetPhoneState.java
+++ b/src/com/android/bluetooth/hfp/HeadsetPhoneState.java
@@ -10,7 +10,6 @@
 import android.telephony.SignalStrength;
 import android.telephony.TelephonyManager;
 import android.util.Log;
-import com.android.internal.telephony.Call;
 
 // Note:
 // All methods in this class are not thread safe, donot call them from