ci: Disable key check for edatools install

Signed-off-by: Nils Wistoff <[email protected]>

ci/install-prereq.sh

@@ -1,7 +1,6 @@
 #!/bin/bash
 
 echo 'deb http://download.opensuse.org/repositories/home:/phiwag:/edatools/xUbuntu_20.04/ /' | sudo tee /etc/apt/sources.list.d/home:phiwag:edatools.list
-curl -fsSL https://download.opensuse.org/repositories/home:phiwag:edatools/xUbuntu_20.04/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/home_phiwag_edatools.gpg > /dev/null
 
 sudo apt update
 sudo apt install device-tree-compiler libfl-dev help2man