I need to remove HMC completly from the project, currently HMC is deployed in PRODUCTION,STAGE and DEVELOP environments too. Which are the steps to remove safely HMC ?
Any extension(including hmc) Hybris offers is available after build and server start because it was specified in localextensions.xml .
Therefore I would suggest trying to remove hmc specific extensions from your localextensions.xml, perform a build and server start.
Sometimes , after an extension was removed, a cleanup needs to be done(hac->Maintenance->Cleanup).
Do this on your local setup to see whether it is what you need.