Add remove_concurrent_index to database helper

What does this MR do?

It adds remove_concurrent_index method to database helper to let developers remove indices concurrently.

Why was this MR needed?

Make developers' life easier. 👍

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #30376 (closed)