packaging: remove Ubuntu 23.04 (EOL)

Support for Ubuntu 23.04 ended in January 2024.

Change-Id: Ib4a7a045762a391552da69ace333e46f10afdfb9

extras/packaging/gnu-linux/Makefile

@@ -166,7 +166,6 @@ DISTRIBUTIONS := \
 	debian_unstable \
 	ubuntu_20.04 \
 	ubuntu_22.04 \
-	ubuntu_23.04 \
 	ubuntu_23.10 \
 	ubuntu_24.04 \
 	fedora_37 \

extras/packaging/gnu-linux/docker/Dockerfile_ubuntu_23.04

@@ -1,22 +0,0 @@
-FROM ubuntu:23.04
-
-ENV DEBIAN_FRONTEND=noninteractive
-
-RUN apt-get clean
-RUN apt-get update && \
-    apt-get install -y -o Acquire::Retries=10 \
-        devscripts \
-        equivs \
-        python-is-python3 \
-        wget
-
-ADD extras/packaging/gnu-linux/scripts/prebuild-package-debian.sh /opt/prebuild-package-debian.sh
-
-COPY extras/packaging/gnu-linux/rules/debian-qt/control /tmp/builddeps/debian/control
-RUN /opt/prebuild-package-debian.sh qt-deps
-
-COPY extras/packaging/gnu-linux/rules/debian/control /tmp/builddeps/debian/control
-RUN /opt/prebuild-package-debian.sh jami-deps
-
-ADD extras/packaging/gnu-linux/scripts/build-package-debian.sh /opt/build-package-debian.sh
-CMD ["/opt/build-package-debian.sh"]

extras/packaging/gnu-linux/rules/debian/jami-all.postinst

@@ -99,8 +99,6 @@ if [ -f /etc/os-release ]; then
         ENDTAG="ubuntu_20.04"
     elif [ "${UBUNTU_CODENAME}" = "jammy" ] || [ "${ID}_${VERSION_ID}" = "ubuntu_22.04" ]; then
         ENDTAG="ubuntu_22.04"
-    elif [ "${UBUNTU_CODENAME}" = "lunar" ] || [ "${ID}_${VERSION_ID}" = "ubuntu_23.04" ]; then
-        ENDTAG="ubuntu_23.04"
     elif [ "${UBUNTU_CODENAME}" = "mantic" ] || [ "${ID}_${VERSION_ID}" = "ubuntu_23.10" ]; then
         ENDTAG="ubuntu_23.10"
     elif [ "${UBUNTU_CODENAME}" = "noble" ] || [ "${ID}_${VERSION_ID}" = "ubuntu_24.04" ]; then