Fix unused imports after merge with main

Remove unused imports flagged by cython-lint and ruff after
resolving merge conflicts with origin/main.

Made-with: Cursor

Author: Andy-Jost

cuda_core/cuda/core/_launch_config.pyx

@@ -4,10 +4,6 @@
 
 from libc.string cimport memset
 
-from cuda.core._utils.cuda_utils cimport (
-    HANDLE_RETURN,
-)
-
 from cuda.core._device import Device
 from cuda.core._utils.cuda_utils import (
     CUDAError,

cuda_core/cuda/core/_linker.pyx

@@ -37,7 +37,6 @@ from cuda.core._utils.cuda_utils import (
     CUDAError,
     check_or_create_options,
     driver,
-    handle_return,
     is_sequence,
 )
 from cuda.core._utils.version import driver_version

cuda_core/cuda/core/_memory/_virtual_memory_resource.py

@@ -17,10 +17,10 @@
     check_or_create_options,
     driver,
 )
-from cuda.core._utils.version import binding_version
 from cuda.core._utils.cuda_utils import (
     _check_driver_error as raise_if_driver_error,
 )
+from cuda.core._utils.version import binding_version
 
 __all__ = ["VirtualMemoryResource", "VirtualMemoryResourceOptions"]
 
@@ -100,7 +100,6 @@ class VirtualMemoryResourceOptions:
     # CUDA 13+ exposes MANAGED in CUmemAllocationType; older 12.x does not
     _allocation_type = {"pinned": _t.CU_MEM_ALLOCATION_TYPE_PINNED}  # noqa: RUF012
     if binding_version() >= (13, 0, 0):
-
         _allocation_type["managed"] = _t.CU_MEM_ALLOCATION_TYPE_MANAGED
 
     @staticmethod

cuda_core/cuda/core/_program.pyx

@@ -13,7 +13,7 @@ from dataclasses import dataclass
 import threading
 from warnings import warn
 
-from cuda.bindings import driver, nvrtc
+from cuda.bindings import nvrtc
 from cuda.pathfinder._optional_cuda_import import _optional_cuda_import
 
 from libcpp.vector cimport vector

cuda_core/cuda/core/_utils/cuda_utils.pyx

@@ -4,7 +4,6 @@
 
 import functools
 from functools import partial
-import importlib.metadata
 import multiprocessing
 import platform
 import warnings

cuda_core/tests/test_program.py

@@ -2,6 +2,7 @@
 #
 # SPDX-License-Identifier: LicenseRef-NVIDIA-SOFTWARE-LICENSE
 
+import contextlib
 import re
 import warnings
 
@@ -11,7 +12,7 @@
 from cuda.core._device import Device
 from cuda.core._module import Kernel, ObjectCode
 from cuda.core._program import Program, ProgramOptions
-from cuda.core._utils.cuda_utils import CUDAError, driver, handle_return
+from cuda.core._utils.cuda_utils import CUDAError, handle_return
 
 pytest_plugins = ("cuda_python_test_helpers.nvvm_bitcode",)
 
@@ -33,10 +34,8 @@ def _is_nvvm_available():
     not _is_nvvm_available(), reason="NVVM not available (libNVVM not found or cuda-bindings < 12.9.0)"
 )
 
-try:
-    from cuda.core._utils.cuda_utils import driver, handle_return, nvrtc
-except Exception:
-    pass
+with contextlib.suppress(Exception):
+    from cuda.core._utils.cuda_utils import nvrtc
 
 
 def _get_nvrtc_version_for_tests():