message: fix linting and remove unused imports
diff: -import { ChaincodeResponse, ChaincodeServerOpts, ChaincodeStub, Shim } from 'fabric-shim';
  +import { ChaincodeResponse, ChaincodeStub, Shim } from 'fabric-shim';
  import { EmissionsRecordInterface } from './lib/emissions';
  import { EmissionsRecordContract } from './lib/emissionsRecordContract';
  @@ -569,4 +569,4 @@ class EmissionsChaincode {
  }
  }
  -Shim.start(new EmissionsChaincode())
  +Shim.start(new EmissionsChaincode());
  