Always test pynvml (#1421)

Do not skip `pynvml` if it's not importable, given `pynvml` is a hard-dependency.

Authors:
  - Peter Andreas Entschev (https://github.com/pentschev)

Approvers:
  - https://github.com/jakirkham
  - James Lamb (https://github.com/jameslamb)

URL: #1421

dask_cuda/tests/test_utils.py

@@ -1,6 +1,7 @@
 import os
 from unittest.mock import patch
 
+import pynvml
 import pytest
 from numba import cuda
 
@@ -197,7 +198,6 @@ def test_get_ucx_config(enable_tcp_over_ucx, enable_infiniband, enable_nvlink):
 
 
 def test_parse_visible_devices():
-    pynvml = pytest.importorskip("pynvml")
     pynvml.nvmlInit()
     indices = []
     uuids = []
@@ -250,7 +250,6 @@ def test_parse_device_memory_limit():
 
 
 def test_parse_visible_mig_devices():
-    pynvml = pytest.importorskip("pynvml")
     pynvml.nvmlInit()
     for index in range(get_gpu_count()):
         handle = pynvml.nvmlDeviceGetHandleByIndex(index)