react-select: Is there a way to remove the button on the right that expand the list, at least in async mode?

To expand on rajesh kumar's answer, you can remove the dropdown indicator and the indicator separator (the horizontal line between the selection text and the dropdown arrow) using the following:

<Select
    components={{ DropdownIndicator:() => null, IndicatorSeparator:() => null }}
/>

We can remove the dropdown indicator by including DropdownIndicator: () => null in components property.

Update:As @shlgug and @nickornotto suggested remove separator by including IndicatorSeparator:() => null

<Select
   components={{ DropdownIndicator:() => null, IndicatorSeparator:() => null }}
 />