docs/build: Remove the python instructions

cbmk hacks PATH now to deal with this, based on
the same work done in lbmk.

see lbmk patch from 5 January 2025:

* 411fb697dfc set up python in PATH, ensuring that it is python3

python3 is dealt with automatically now, so the user
doesn't have to do it

Signed-off-by: Leah Rowe <leah@libreboot.org>

site/docs/build/index.md

@@ -80,20 +80,6 @@ Change the name and email address to whatever you want, when doing this.
 You may also want to follow more of the steps here:
 <https://git-scm.com/book/en/v2/Getting-Started-First-Time-Git-Setup>
 
-Python
-======
-
-You should ensure that the `python` command runs python 3, on your system.
-Python2 is unused by cbmk or anything that it pulls down as modules. 
-
-If building on Debian/Ubuntu based systems, you can achieve that via:
-
-	sudo apt install python-is-python3
-
-On Fedora, you can use the following
-
-	sudo dnf install python-unversioned-command
-
 How to compile Canoeboot
 ========================
 

site/docs/build/index.uk.md

@@ -93,11 +93,8 @@ Git
 Ви також можете захотіти прослідувати більшій кількості етапів тут:
 <https://git-scm.com/book/en/v2/Getting-Started-First-Time-Git-Setup>
 
-Python
-======
-
-Python2 не використовується cbmk або будь-чим, що завантажується в якості модулів. Ви
-маєте переконатись, що команда `python` виконує python 3 на вашій системі.
+Build
+=====
 
 Zero..st, check time/date
 -------------------------