HI S_K_Marshall,
There is no easy & quick solution to this, very sorry. I'm even more sorry to say that this is "probably" a good thing, because you do not want images automatically tossed as that way you had no input on which version of that image to delete.
That notwithstanding, you didn't mention if you have duplicates in the same folder or differeent folders. If they are in the same folder and if they have a mostly similar name (e.g., myphoto_2213.jpg and myphoto_2213-1.jpg), that's pretty easy: look for all of the "-1" and delete them. If they are all over your computer (different folders), than using software like "PhotoSweeper," can help.
However, as you've discovered, Bridge cannot directly help you on this.
Hope that helps.