You either need to edit the template files or override the CSS to remove them. There is a no logo container option, but it of course requires there to be no logo in the HTML. If you keep losing your changes on update it means you're incorrectly modifying core files.
For template files make a copy of the default folder found below, rename it, then delete any files in your copy that you don't intend to edit, make your changes, then select your template within GJ > Configuration.
/components/com_comprofiler/plugin/user/plug_cbgroupjive/templates/default
To do this with CSS just use a CSS override as follows. This should remove it from the canvas boxes on all groups, all categories, and category group outputs. Right click and inspect the container on other pages to see its CSS classes.
Code:
.gjGroupsGroup .gjCanvasBoxPhoto,
.gjCategoriesCategory .gjCanvasBoxPhoto,
.gjCategoryGroup .gjCanvasBoxPhoto {
display: none;
}
See the below regarding CSS overrides.
www.joomlapolis.com/blog/kyle/18711-template-css-overrides-made-easy