Go through instructions removing extended ARG.
        get_instruction_bytes previously adjusted the operand values
        to account for these

def remove_extended_args(self, instructions):
        """Go through instructions removing extended ARG.
        get_instruction_bytes previously adjusted the operand values
        to account for these"""
        new_instructions = []
        last_was_extarg = False
        n = len(instructions)
        for i, inst in enumerate(instructions):
            if (inst.opname == 'EXTENDED_ARG'
                and i+1 < n and instructions[i+1].opname != 'MAKE_FUNCTION'):
                last_was_extarg = True
                starts_line = inst.starts_line
                is_jump_target = inst.is_jump_target
                offset = inst.offset
                continue
            if last_was_extarg:

                # j = self.stmts.index(inst.offset)
                # self.lines[j] = offset

                new_inst = inst._replace(starts_line=starts_line,
                                        is_jump_target=is_jump_target,
                                        offset=offset)
                inst = new_inst
                if i < n:
                    new_prev = self.prev_op[instructions[i].offset]
                    j = instructions[i+1].offset
                    old_prev = self.prev_op[j]
                    while self.prev_op[j] == old_prev and j < n:
                        self.prev_op[j] = new_prev
                        j += 1

            last_was_extarg = False
            new_instructions.append(inst)
        return new_instructions