Delete old net http adapter class

What does this MR do and why?

Delete old net http adapter class

Delete old specs file

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

NA

How to set up and validate locally

1. There should not be any regression in specs or feature problems.
2. Everything should work as before.
3. These classess were not used anywhere except the class itself and its spec.

Related to #430830