Now that we have ROADMAP.md in the root of the project, the outdated and
non-specific ROADMAP.md in project/ can be removed.
Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
Upstream-commit: 548caddaf670fd6837e4e74a38e58a58ed6088b3
Component: engine