Problem with a custom widget

Hello,
I am new to SiteOrigin and I need to improve a site that contains a custom widget.
This widget displays in a pop-up a 360° image after clicking on the thumbnail.
The widget is created in its folder which is located in the plugins but there is also a page with a piece of Javascript / JQuery code which is located in the site pages.
I would like to remove this page and not have it in the list of pages of the site and that the script is used directly in the widget.
Do you have any idea about this problem?
I attach the script in question
Thanks

$(document).ready(function(){
var viewer = PhotoSphereViewer({
container: 'vue360',
panorama: '',
default_fov: 90,
mousewheel: false,
navbar: false,
size: { width: $(window).width(), height: $(window).height() },
});
})