Don't use a unique cache dir for each pytest worker (#3693)

Revert
00858c3

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~https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/13887151636~
*
~https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/13897029875~
*
https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/14241782510

The main idea is not to hide problems if they occur, it is very unlikely
that users will have the same setup.

Signed-off-by: Anatoly Myachev <[email protected]>

Author: anmyachev

python/test/unit/conftest.py

@@ -7,10 +7,6 @@
 
 def pytest_configure(config):
     config.addinivalue_line("markers", "interpreter: indicate whether interpreter supports the test")
-    worker_id = os.getenv("PYTEST_XDIST_WORKER")
-    # On Windows, use a dedicated Triton cache per pytest worker to avoid PermissionError.
-    if os.name == "nt" and worker_id:
-        os.environ["TRITON_CACHE_DIR"] = tempfile.mkdtemp(prefix="triton-")
     if os.name == "nt":
         config.addinivalue_line("markers", "forked: subprocess analogue of pytest.mark.forked on Windows")