Safe To Delete These Residual Virtualbox Files?

A while back I uninstalled Oracle VM VirtualBox Manager 4.2.14 with IObit Uninstaller 5.1.0.7, using IObit's Powerful Scan feature. IObit said VirtualBox was successfully uninstalled, and it disappeared from Programs and Features.

However, the uninstall didn't remove a Virtual Machine Shell Information file and a Virtual Machine Definition file, both associated with XP, so I deleted them both manually.

Now I find 54 files and folders associated with VirtualBox.

I'm pretty sure these are all safe to delete, but I thought I'd check here first. I tried to attach VirtualBox.search-ms, just in case that's worth looking at, but For some reason, the Upload File thing thinks it's a folder and won't upload it.

So should I just delete these files?

 

It's safe to delete those files.