How removing the page/post name from breadcrumbs?

Hi,

I have a breadcrumb link into a custom post single page.

Actually:
Home > Category > Sub Category > Post

What I want:
Home > Category > Sub Category

I have this working code in single-custom.php because I didn’t found a function parameter and -at same time- I don’t want to modify de plugin code:

$bc = bcn_display(true);
$strrpos = strrpos($bc , '?' , -1);
$less = strlen($bc) - $strrpos + 1;

echo substr($bc , 0 , "-$less");

What is the best way to remove that text? Thank you!

https://www.ads-software.com/plugins/breadcrumb-navxt/