Hi Emit,
Short answer: no. They are separate files so there's no way for any computer to know what you want (and would you really want to trust a computer to know before you do? ;>)
But, how are you looking at them? If you look at them in the Content Panel sorted by file name or date corrected, they should be side-by-side. At that point you simply have to press the Shift key (because they are sequential at that point) or the Command key (on the Mac, forgive me but I do not remember at this moment what key you press on PCs for non-sequential items) as well to make them both active and then delete them both. So yes, an extra key tap but not horrendous.
BTW, I've never understood Bridge's default panel setup. I like my Content Panel on the left side with the Preview Panel in the middle taking up most of Bridge's screen space. (What good is preview if it's tiny?). By changing the size of the thumbnails and the width of the Content Panel you can change how many thumbnails you see which may also help see raw + jpg side by side.
I hope this makes sense, I hope even more if it helps!