Remove deprecated remote_development_agent_config references

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/183427



Merged-by: Chad Woolley <cwoolley@gitlab.com>
Approved-by: Dylan Griffith <dyl.griffith@gmail.com>
Approved-by: Nao Hashizume <nhashizume@gitlab.com>
Approved-by: Safwan Ahmed <safahmed@gitlab.com>
Approved-by: Zhaochen Li <zli@gitlab.com>
Approved-by: Chad Woolley <cwoolley@gitlab.com>
Reviewed-by: Chad Woolley <cwoolley@gitlab.com>
Co-authored-by: Daniyal Arshad <darshad@gitlab.com>