remove: hcp related code in agent for HCP consul EoL

[sreeram77]

Description

Remove HCP related code in agent since HCP Consul has reached end of life. This includes cloud config

Testing & Reproduction steps

Links

PR Checklist

• [ ] updated test coverage
• [ ] external facing docs updated
• [ ] appropriate backport labels added
• [ ] not a security concern

PCI review checklist

• [ ] I have documented a clear reason for, and description of, the change I am making.

• [ ] If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.

• [ ] If applicable, I've documented the impact of any changes to security controls.

  Examples of changes to security controls include using new access control methods, adding or removing logging pipelines, etc.