Hi,
to hide the button you can add a CSS like this in your template:

.jsn-p-opt{display:none !important}

Alternatively you can remove the button with template override:
- Copy file from /components/com_jsn/views/profile/tmpl/default.php in /templates/your-theme-folder/html/com_jsn/profile/default.php
- Open the new file and remove lines 46 and 47

I did option 1 and it removed the button from full width view, but when I make my screen smaller it pops up again.

Is it possible to remove it in all responsive sizes?

Hi,
it should works also in mobile version, anyway it may depends from the CSS order, try with this code:

body #easyprofile .jsn-p-opt{display:none !important}