MFC 271140:

MFC 271140:

  Delete old arm dts tree. This was created by cherry picking from a
  full vendor tree. This worked great until it was time to update, but
  now it is time to update. Hit the rest button by removing this branch
  and re-adding it by a full copy of whatever is in the vendor tree.

git-svn-id: svn://svn.freebsd.org/base/stable/10@273713 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f