test: clean up code resulting from PR #130

[bglamadrid]

Comments don't hurt code itself. But when they don't improve readability, they are just garbage.

Originally posted by @bglamadrid in https://github.com/trebol-ecommerce/spring-boot-backend/pull/130#pullrequestreview-1137442342

I'm raising this issue in regard to all files affected by PR #130, please have a good look at it. The main requirements are to:

• [ ] Remove all code enclosed within block and line comments
• [ ] Remove all resulting empty methods

[ashwinpadmakumar]

@bglamadrid I would like to take up this task. Can you please assign it to me?