You need the binutils from binutils-pass1 only for Adjusting the tool chain
"Now that the adjusted linker is installed, you have to remove the Binutils build and source directories." On the same page.
So you need to remove the binutils installed during binutils-pass1 after Adjusting The Toolchain and then reinstall binutils for binutils-pass2...
If that makes sense?
Seriously, you have to read the chapter completely and understand it before doing anything or something may break a few pages (and more importantly hours or days) later.
Tedious and not alwasy the easiest thing to do, I know that, believe me! But once you have done it once... enter ALFS