Sure, here's a screenshot of the layers panel. I hope this is what you mean (sorry, I'm very much a beginner with Illustrator)
It looks like you have already expanded your object fully and have vector. It would have been easier to have used the option on the advanced menu to ignore the white, but since the image is expanded, you will have to select the white objects and delete them manually. You can use the magic wand to do this, but the results might not be what you expect. I would try it, but if you are not happy, it might be easier to start fresh and use the advanced options BEFORE you expand and set it to ignore the white.