Como ocultar texto del desplegable?

Como ocultar texto del desplegable?

Are you referring to the label of the dropdown field or the placeholder? Either way, both can be changed or removed in the widget settings for as long as the separator (colon) is present.

The first highlight is the label and the second one is the placeholder (hint).

No, I mean hide an option within the drop-down.

There's no way to hide an option in the settings. If you want to exclude an option, you need to remove it from the settings.