Remove github.com/docker/docker from vendor

Signed-off-by: Vincent Demeester <[email protected]>

Author: vdemeester

vendor.conf

@@ -15,7 +15,6 @@ github.com/coreos/pkg v3
 github.com/godbus/dbus v3
 github.com/golang/protobuf 18c9bb3261723cd5401db4d0c9fbc5c3b6c70fe8
 # Command-line interface.
-github.com/docker/docker 0f5c9d301b9b1cca66b3ea0f9dec3b5317d3686d
 github.com/cyphar/filepath-securejoin v0.2.1
 github.com/docker/go-units v0.2.0
 github.com/urfave/cli d53eb991652b1d438abdd34ce4bfa3ef1539108e