Remove top level of your breadcrumb
If you want to remove the top level of your breadcrumb (because you already have a navbar entry to take your to your top level), then you can use this script to do that.
var str = this.innerHTML;
this.innerHTML = str.replace(/^\s*<a .*?a>.*?</i, "<");
I would not recommend this code if you have galleries in communities that allow your customization because the top level of the breadcrumb in a community is the community itself so removing that wouldn't be doing what you want.