Revert "Give systemctl poweroff --force the sudoer permission to fix ubuntu24 self termination issue (#2959)"

This reverts commit cc2aeb2.

Author: gmarciani

cookbooks/aws-parallelcluster-slurm/templates/default/slurm/99-parallelcluster-slurm.erb

@@ -1,10 +1,8 @@
 Cmnd_Alias SLURM_COMMANDS = <%= node['cluster']['slurm']['install_dir'] %>/bin/scontrol, <%= node['cluster']['slurm']['install_dir'] %>/bin/sinfo
 Cmnd_Alias SLURM_HOOKS_COMMANDS = <%= node_virtualenv_path %>/bin/slurm_suspend, <%= node_virtualenv_path %>/bin/slurm_resume, <%= node_virtualenv_path %>/bin/slurm_fleet_status_manager
 Cmnd_Alias SHUTDOWN = /usr/sbin/shutdown
-Cmnd_Alias SYSTEMCTL_POWEROFF = /usr/bin/systemctl poweroff --force
 
 <%= node['cluster']['cluster_admin_user'] %> ALL = (root) NOPASSWD: SLURM_COMMANDS
 <%= node['cluster']['cluster_admin_user'] %> ALL = (root) NOPASSWD: SHUTDOWN
-<%= node['cluster']['cluster_admin_user'] %> ALL = (root) NOPASSWD: SYSTEMCTL_POWEROFF
 
 <%= node['cluster']['slurm']['user'] %> ALL = (<%= node['cluster']['cluster_admin_user'] %>) NOPASSWD:SETENV: SLURM_HOOKS_COMMANDS