ci/tools: Remove Ubuntu 20.04 installer

.ci/uhd-build-docker-container.yml

@@ -77,8 +77,7 @@ variables:
 - name: ubuntuDebDockerImages
   # Match with Ubuntu images in linuxDockerImages
   value:
-    "{'Ubuntu-2004-builder':{'buildOSName':'ubuntu2004','dockerImageName':'uhd-builder-ubuntu2004','ubuntuReleaseName':'focal'},
-    'Ubuntu-2204-builder':{'buildOSName':'ubuntu2204','dockerImageName':'uhd-builder-ubuntu2204','ubuntuReleaseName':'jammy'},
+    "{'Ubuntu-2204-builder':{'buildOSName':'ubuntu2204','dockerImageName':'uhd-builder-ubuntu2204','ubuntuReleaseName':'jammy'},
     'Ubuntu-2404-builder':{'buildOSName':'ubuntu2404','dockerImageName':'uhd-builder-ubuntu2404','ubuntuReleaseName':'noble'},
     'Ubuntu-2510-builder':{'buildOSName':'ubuntu2510','dockerImageName':'uhd-builder-ubuntu2510','ubuntuReleaseName':'questing'}}"
 

tools/debs/uhd_ubuntu_deb.py

@@ -20,7 +20,7 @@ import subprocess
 import sys
 import tarfile
 
-supported_ubuntu_releases = ["focal", "jammy", "noble", "plucky", "questing"]
+supported_ubuntu_releases = ["jammy", "noble", "plucky", "questing"]
 tar_command = "tar --exclude='.git*' --exclude='./debian' --exclude='*.swp' --exclude='./fpga/usrp1' --exclude='./fpga/usrp2' --exclude='./fpga/usrp3/top/b200' --exclude='./fpga/usrp3/top/b2xxmini' --exclude='./fpga/usrp3/lib/*_200' --exclude='build' --exclude='./images/*.pyc' --exclude='./images/uhd-*' --exclude='tags' --exclude='.ci' --exclude='.clang*' -cJf {}/uhd_{}.orig.tar.xz ."
 debuild_command = "debuild -S -i -sa"
 debuild_nosign = " -uc -us"

tools/debs/upload_debs.sh

@@ -46,7 +46,7 @@ ORIG_RELEASE=`head -1 host/cmake/debian/changelog | sed 's/.*) \(.*\);.*/\1/'`
 # Currently supported versions can be found here:
 # https://launchpad.net/ubuntu/+ppas
 #
-RELEASES="focal jammy noble questing"
+RELEASES="jammy noble questing"
 PPA=ppa:ettusresearch/uhd
 
 #