Remove tdp vars edit command

[PaulFarault]

Which issue(s) this PR fixes

Fixes None

Additional comments

Remove the tdp vars edit command. It won't be needed as we are heading toward an architecture where tdp_vars holds an internal state that should not be modified directly by the user. User conf should be passed as --override (that will late be renamed to --conf).

Agreements

• I hereby declare this contribution to be licensed under the Apache License Version 2.0, January 2004.
• I hereby agree to grant TOSIT a copyright license to use my contributions.