fix: Remove outdated nvrx arg (#441) (#442)

Signed-off-by: oliver könig <okoenig@nvidia.com>
Signed-off-by: NeMo Bot <nemo-bot@nvidia.com>
Co-authored-by: oliver könig <okoenig@nvidia.com>

Author: svcnvidia-nemo-ci

nemo_run/run/torchx_backend/components/ft_launcher.py

@@ -123,9 +123,6 @@ def ft_launcher(
             else:
                 ft_args += ["--max-restarts", str(max_restarts)]
 
-        if dgxc is True:
-            ft_args += ["--ft-use-infra-group-rank", "False"]
-
     else:
         ft_args = ["--ignore-missing-fault-tol-cfg"]