Disable Helper Text

[Varun Raj Manoharan]

How can I disable the default helper text given by jQuery UI Autocomplete.

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[Ivan Virabyan]

This helper text shouldn't be visible, it is only used for screen readers. Seems like you don't included corresponding styles to your project.
Jquery UI stylesheets contain this style:

.ui-helper-hidden-accessible {
    border: 0;
    clip: rect(0 0 0 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
}