Delete merge_request_widget.js

What does this MR do?

Remove merge_request_widget

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Screenshots (if relevant)

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?

/cc @fatihacet

assigned to @fatihacet

Actually, I'll assign when builds pass.

assigned to @lbennett

assigned to @fatihacet

Thanks for noticing this and creating the MR @lbennett 👍 💯

I just checked the EE compat check failure and seems like it's a transient error and won't happen in the future.

approved this merge request

merged

mentioned in commit 0ca242fc