Delete Parcel references and other unused code.

Test: Basic telephony sanity
Bug: 32020264
Change-Id: I410988c7f347fcca2770d9b099f489bd6d625d0b
diff --git a/libril/ril_internal.h b/libril/ril_internal.h
index 9cb8a66..b7b101d 100644
--- a/libril/ril_internal.h
+++ b/libril/ril_internal.h
@@ -87,8 +87,7 @@
 
 typedef struct CommandInfo {
     int requestNumber;
-    // todo: change parcel to serial
-    int(*responseFunction) (Parcel &p, int slotId, int requestNumber, int responseType, int token,
+    int(*responseFunction) (int slotId, int responseType, int token,
             RIL_Errno e, void *response, size_t responselen);
 } CommandInfo;