Remove unused QA selectors

What does this MR do?

Removes QA selectors that were left behind when selectors only used in units tests were being renamed.

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content