cuda.core: drop unused intptr_t import in _module.pyx

Satisfy cython-lint after switching get_module() to as_py().

Signed-off-by: Jinfeng <jinfengl@nvidia.com>

Author: lijinf2

cuda_core/cuda/core/_module.pyx

@@ -6,7 +6,6 @@ from __future__ import annotations
 
 cimport cython
 from libc.stddef cimport size_t
-from libc.stdint cimport intptr_t
 from libcpp.mutex cimport py_safe_call_once
 
 from collections import namedtuple