Removes d.Client.RemoveContainer in Purge method (#120)

Author: calvn

dockertest.go

@@ -255,10 +255,6 @@ func (d *Pool) Run(repository, tag string, env []string) (*Resource, error) {
 
 // Purge removes a container and linked volumes from docker.
 func (d *Pool) Purge(r *Resource) error {
-	if err := d.Client.KillContainer(dc.KillContainerOptions{ID: r.Container.ID}); err != nil {
-		return errors.Wrap(err, "")
-	}
-
 	if err := d.Client.RemoveContainer(dc.RemoveContainerOptions{ID: r.Container.ID, Force: true, RemoveVolumes: true}); err != nil {
 		return errors.Wrap(err, "")
 	}