add receiptsRoot into protocol

Author: sean-liu55

src/main/protos/core/Tron.proto

@@ -413,6 +413,7 @@ message BlockHeader {
     bytes witness_address = 9;
     int32 version = 10;
     bytes accountStateRoot = 11;
+    bytes receiptsRoot = 12;
   }
   raw raw_data = 1;
   bytes witness_signature = 2;
@@ -541,12 +542,6 @@ message InternalTransaction {
   bool rejected = 6;
 }
 
-message DelegatedResourceAccountIndex {
-  bytes account = 1;
-  repeated bytes fromAccounts = 2;
-  repeated bytes toAccounts = 3;
-}
-
 message NodeInfo {
   int64 beginSyncNum = 1;
   string block = 2;