Produce a FALSE instruction.

    :param classical_reg: A classical register to modify.
    :return: An instruction object representing the equivalent MOVE.

def FALSE(classical_reg):
    """
    Produce a FALSE instruction.

    :param classical_reg: A classical register to modify.
    :return: An instruction object representing the equivalent MOVE.
    """
    warn("`FALSE a` has been deprecated. Use `MOVE a 0` instead.")
    if isinstance(classical_reg, int):
        classical_reg = Addr(classical_reg)
    return MOVE(classical_reg, 0)