Drop openEuler support

The job is broken since it is running with python3.7 and most services
now require at least python3.8.

Signed-off-by: Dr. Jens Harbott <harbott@osism.tech>
Change-Id: Ie21f71acffabd78c79e2b141951ccf30a5c06445
diff --git a/stack.sh b/stack.sh
index e53280e..df283bb 100755
--- a/stack.sh
+++ b/stack.sh
@@ -229,7 +229,7 @@
 
 # Warn users who aren't on an explicitly supported distro, but allow them to
 # override check and attempt installation with ``FORCE=yes ./stack``
-SUPPORTED_DISTROS="bullseye|focal|jammy|f35|opensuse-15.2|opensuse-tumbleweed|rhel8|rhel9|openEuler-20.03"
+SUPPORTED_DISTROS="bullseye|focal|jammy|f35|opensuse-15.2|opensuse-tumbleweed|rhel8|rhel9"
 
 if [[ ! ${DISTRO} =~ $SUPPORTED_DISTROS ]]; then
     echo "WARNING: this script has not been tested on $DISTRO"
@@ -280,13 +280,6 @@
 sudo chown root:root $TEMPFILE
 sudo mv $TEMPFILE /etc/sudoers.d/50_stack_sh
 
-# TODO(wxy): Currently some base packages are not installed by default in
-# openEuler. Remove the code below once the packaged are installed by default
-# in the future.
-if [[ $DISTRO == "openEuler-20.03" ]]; then
-    install_package hostname
-fi
-
 # Configure Distro Repositories
 # -----------------------------