I use ES File Explorer. I've checked, the data folder appeared empty (and yes, root browsing was enabled).
What's weird is that maaaybe 1/3 times I try, the local folder DOES show up, and I was able to delete the copy and change the boot anim. But it doesn't always show up, because when I went back in to edit the boot anim I couldn't get to the folder again. Didn't feel like the hassle, so I just left it rather than trying again.