First, we delete the contracts which are no longer useful (ConvertLib.sol,Metacoin.sol).
Then, we have to make changes in the files under migration folder.
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initial_migration.js file will deploy the Migration.sol, we donnot need to make any changes.
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deploy_contract.js: change the deploy contract;
- remve the links, since it is not a library
- we add the deployer commands to deploy new contract