Remove devicetree script

This script is stale. It hasn't worked since TGL and only produced a few
useful values. The format of devicetree.cb also continues to change with
each SoC generation.

The removal of devmem2 should also fix setup on Debian, which does not
package it.

Signed-off-by: Tim Crawford <tcrawford@system76.com>

Author: crawfxrd

docs/adding-a-new-board.md

@@ -77,11 +77,6 @@ Once coreboot is ported, add its configuration.
 cp coreboot/.config models/<model>/coreboot.config
 ```
 
-### devicetree
-
-`generate.sh` does not create `devicetree.cb`. Some values for this file can be
-produced using the `devicetree.py` script.
-
 ### Smart amp
 
 Boards may have a smart amp, which must be configured for speaker output to

scripts/devicetree.py

@@ -23,13 +23,11 @@ if [[ "${ID}" =~ "debian" ]] || [[ "${ID_LIKE}" =~ "debian" ]]; then
     ccache \
     cmake \
     curl \
-    devmem2 \
     dosfstools \
     flashrom \
     git-lfs \
     libncurses-dev \
     libudev-dev \
-    msr-tools \
     mtools \
     parted \
     python-is-python3 \
@@ -47,7 +45,6 @@ elif [[ "${ID}" =~ "fedora" ]] || [[ "${ID_LIKE}" =~ "fedora" ]]; then
     flashrom \
     git-lfs \
     libuuid-devel \
-    msr-tools \
     mtools \
     ncurses-devel \
     parted \
@@ -65,7 +62,6 @@ elif [[ "${ID}" =~ "arch" ]] || [[ "${ID_LIKE}" =~ "arch" ]]; then
     dosfstools \
     flashrom \
     git-lfs \
-    msr-tools \
     mtools \
     ncurses \
     parted \