services.datadog: remove python2 from systemd service (#228312)

which caused a security warning. seems to work without it so let's ditch it

Changed files
+1 -1
nixos
modules
services
monitoring
+1 -1
nixos/modules/services/monitoring/datadog-agent.nix
···
systemd.services = let
makeService = attrs: recursiveUpdate {
-
path = [ datadogPkg pkgs.python pkgs.sysstat pkgs.procps pkgs.iproute2 ];
+
path = [ datadogPkg pkgs.sysstat pkgs.procps pkgs.iproute2 ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
User = "datadog";