message: Remove unused token_name and asset_symbol
diff: @@ -21,13 +21,11 @@ extern "C" {
  typedef uint64_t account_name;
  typedef uint64_t permission_name;
  -typedef uint64_t token_name;
  typedef uint64_t table_name;
  typedef uint32_t time;
  typedef uint64_t scope_name;
  typedef uint64_t action_name;
  -typedef uint64_t asset_symbol;
  typedef int64_t share_type;
  typedef uint16_t weight_type;
  