How to remove aria-labelledby attribute?

[GitHubHubus]

Hello.
In dropdownContainer automatically put the attribute aria-labelledby.

I saw documentation and didn't find how I can remove this attribute from span container.
Is it possible?

[nachitox]

        if(dropdownLabel.length) {

            // MDN `aria-labelledby` description:  Indicates the IDs of the elements that are the labels for the object.
            self.dropdownContainer.attr("aria-labelledby", dropdownLabel[0].id);

        }

I changed it to:

        if(dropdownLabel.length && dropdownLabel[0].id) {

            // MDN `aria-labelledby` description:  Indicates the IDs of the elements that are the labels for the object.
            self.dropdownContainer.attr("aria-labelledby", dropdownLabel[0].id);

        }