[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

tests/python/test_cross_platform_parity.py

@@ -5,7 +5,6 @@ from __future__ import annotations
 import re
 from pathlib import Path
 
-import pytest
 
 REPO_ROOT = Path(__file__).resolve().parents[2]
 INSTALL_SH = REPO_ROOT / "install.sh"

tests/python/test_e2e_no_torch_sandbox.py

@@ -21,7 +21,6 @@ from __future__ import annotations
 
 import os
 import shutil
-import signal
 import subprocess
 import sys
 import textwrap

tests/python/test_install_python_stack.py

@@ -2,13 +2,11 @@
 
 from __future__ import annotations
 
-import importlib
 import os
 import sys
 from pathlib import Path
 from unittest import mock
 
-import pytest
 
 # Add the studio directory so we can import install_python_stack
 STUDIO_DIR = Path(__file__).resolve().parents[2] / "studio"

tests/python/test_no_torch_filtering.py

@@ -10,7 +10,6 @@ Covers:
 
 from __future__ import annotations
 
-import importlib
 import os
 import re
 import subprocess

tests/python/test_studio_import_no_torch.py

@@ -15,7 +15,6 @@ import ast
 import os
 import shutil
 import subprocess
-import sys
 import tempfile
 import textwrap
 from pathlib import Path