Revert "Fix inconsistent date formats in API"

This reverts commit 945fc9d882324ac87505e34bb74e6ebe30be1309.

Signed-off-by: Victor Vieux <victorvieux@gmail.com>
Upstream-commit: b261ce5fb007371892bc40a5853337db09a1c8ae
Component: engine

components/engine/api/client/ps.go

@@ -151,7 +151,7 @@ func (cli *DockerCli) CmdPs(args ...string) error {
 		}
 
 		fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\t%s\t%s\t", ID, image, command,
-			units.HumanDuration(time.Now().UTC().Sub(container.Created)),
+			units.HumanDuration(time.Now().UTC().Sub(time.Unix(int64(container.Created), 0))),
 			container.Status, api.DisplayablePorts(container.Ports), strings.Join(names, ","))
 
 		if *size {