After you trace the bitmap in Inkscape you need to break apart the image - which will make the interiors and exteriors separate - then you just have to click on the one you don’t want and delete it.
If your design has lots of “windows” (like flower petals or the like) you’ll need to delete each of the centers separately, but it’s definitely better than one node at at time!
What you need starts at about 2:45 in the video here: