To remove OneDrive from the sidebar in the file explorer. Because it's annoying and I don't use it.

Wed 2 December 2015

1. Opened regedit
2. Went to HKEY_CLASSES_ROOT{018D5C66-4533-4307-9B53-224DE2ED1FE6}
3. Set System.IsPinnedToNameSpaceTree from 1 to 0