Removes the virtualenv directory from the system.

def cleanup_virtualenv(bare=True):
    """Removes the virtualenv directory from the system."""
    if not bare:
        click.echo(crayons.red("Environment creation aborted."))
    try:
        # Delete the virtualenv.
        vistir.path.rmtree(project.virtualenv_location)
    except OSError as e:
        click.echo(
            "{0} An error occurred while removing {1}!".format(
                crayons.red("Error: ", bold=True),
                crayons.green(project.virtualenv_location),
            ),
            err=True,
        )
        click.echo(crayons.blue(e), err=True)