Custom install of node20 doesn't resolve the CI warnings. So removing the install as it's pointless.

See microsoft/azure-pipelines-agent#5019 for request to add a way to silence the warning.

[skip ci]

Author: grafikrobot

.ci/azp-linux-prep-container.yml

@@ -6,9 +6,9 @@ steps:
     /tmp/docker exec -t -u root container apt-get -qq install sudo
     /tmp/docker exec -t -u root container mv /etc/sudoers.bak /etc/sudoers
   displayName: Sudorize
-- script: |
-    # Node 20 doesn't work with Ubuntu 16/18 glibc: https://github.com/actions/checkout/issues/1590
-    sudo apt-get -qq install curl xz-utils
-    sudo curl -sLO https://archives.boost.io/misc/node/node-v20.9.0-linux-x64-glibc-217.tar.xz
-    sudo tar -xJ --strip-components 1 -C /node20217 -f node-v20.9.0-linux-x64-glibc-217.tar.xz
-  displayName: Node
+# - script: |
+#     # Node 20 doesn't work with Ubuntu 16/18 glibc: https://github.com/actions/checkout/issues/1590
+#     sudo apt-get -qq install curl xz-utils
+#     sudo curl -sLO https://archives.boost.io/misc/node/node-v20.9.0-linux-x64-glibc-217.tar.xz
+#     sudo tar -xJ --strip-components 1 -C /node20217 -f node-v20.9.0-linux-x64-glibc-217.tar.xz
+#   displayName: Node