How to change this?

[link6155]

I was wondering if anyone knows how to change/remove this line?

[3am]

It's part of these images:

Address, Breadcrumb, & Search > Address > Go Toolbar > Basic > Normal > Active > Button > Normal
Address, Breadcrumb, & Search > Address > Go Toolbar > Basic > Normal > InActive > Button > Normal
Address, Breadcrumb, & Search > Address > Go Toolbar > Basic > Max > Active > Button > Normal
Address, Breadcrumb, & Search > Address > Go Toolbar > Basic > Max > InActive > Button > Normal

This gray bit: