Problem/Motivation
tabledrag.js has a mysterious and completely unnecessary addition of "menu-item__link" class to the first link in a table drag row. This doesn't seem to have any purpose and doesn't make sense if you're rearranging things other than menu links.
Proposed resolution
Remove the code that adds these classes.
Remaining tasks
Review.
User interface changes
None.
API changes
None (compared to Drupal 7). This seems like it may have been accidentally added at some point.
