Remove deprecated API references to remote_development_agent_config

MR: Remove deprecated remote_development_agent_conf... (!183427 - merged)

Description

Remove deprecated API references to remote_development_agent_configs

This is a follow-up issue to Switch from remote_development_agent_configs ta... (#480135 - closed), to be completed in %17.10 after the initial table migration is completed in %17.4

See note in !163846 (comment 2079457470)

Acceptance Criteria

• Remaining code related to remote_development_agent_config API references is deleted.
• Search for any remaining doc references across various doc repos
• Rename any old references if required - e.g. !163846 (comment 2079457470)

Technical Requirements

• There were TODO: comments added in Switch from remote_development_agent_configs ta... (#480135 - closed) indicating the code which needs to be removed, with a link to this issue
• Search for any remaining obsolete references to `/remote.?development.?agent.?config/
• Ensure there are no impacts on the API, perform exploratory testing of Workspaces functionality.

Design Requirements

N/A, no changes required.