How to delete visibility point?

You can add the following code to the style.css file of your theme.

.dwqa-answer-form .dwqa-select {
   display: none;
}

It does not work. Maybe there is another one way?

Please send me your site URL for further checking.

https://robotbro.ru/questions/vopros-tolko-chto/
you should be logged to see visibility point