Fix get_gpu_name returning empty name. (#5925)
Repro in python shell
>>> subprocess.check_output(["nvidia-smi", "--query-gpu=gpu_name", "--format=csv"], encoding='utf-8').split("\n")[1:]
['NVIDIA A100-SXM4-40GB', '']
Tested fix
>>> subprocess.check_output(["nvidia-smi", "--query-gpu=gpu_name", "--format=csv"], encoding='utf-8').split("\n")[1:-1]
['NVIDIA A100-SXM4-40GB']
