message: Update eosio.token.hpp
  Removed friend eosiosystem::system_contract
diff: @@ -36,11 +36,6 @@ namespace eosio {
  inline asset get_balance( account_name owner, symbol_name sym )const;
  - private:
  -
  - friend eosiosystem::system_contract;
  -
  -
  private:
  struct account {
  asset balance;
  