Disabling WiFi and Bluetooth on Raspberry Pi's

I have some Raspberry's that are on wired network, and obviously, WiFi is just unecessary. The best way to disable this that I've found is to add these two lines to e.g. /etc/modprobe.d/raspi-blacklist.conf:

blacklist brcmfmac
blacklist brcmutil

At this point, you probably want to turn off the Bluetooth services:

systemctl disable  bluetooth.service

Hacking: