feature: optimize asset

1. remote AccountAsset

Author: forfreeday

core/Tron.proto

@@ -216,38 +216,6 @@ message Account {
   repeated Permission active_permission = 33;
 }
 
-/* AccountAsset */
-message AccountAsset {
-
-  /* frozen balance */
-  message Frozen {
-    int64 frozen_balance = 1; // the frozen trx balance
-    int64 expire_time = 2; // the expire time
-  }
-
-  // the create address
-  bytes address = 1;
-
-  // the other asset owned by this account
-  map<string, int64> asset = 2;
-
-  // the other asset owned by this account，key is assetId
-  map<string, int64> assetV2 = 3;
-
-  bytes asset_issued_name = 4;
-  bytes asset_issued_ID = 5;
-
-  map<string, int64> latest_asset_operation_time = 6;
-  map<string, int64> latest_asset_operation_timeV2 = 7;
-
-  map<string, int64> free_asset_net_usage = 8;
-  map<string, int64> free_asset_net_usageV2 = 9;
-
-  // frozen asset(for asset issuer)
-  repeated Frozen frozen_supply = 10;
-}
-
-
 message Key {
   bytes address = 1;
   int64 weight = 2;