Remove preload ORT DLL (undo PR 689)

src/winml/modelkit/__init__.py

@@ -43,36 +43,6 @@
 
 logging.getLogger(__name__).addHandler(logging.NullHandler())
 
-def _preload_bundled_onnxruntime_dll() -> None:
-    # Windows ships C:\Windows\System32\onnxruntime.dll (older API version)
-    # as part of the system WindowsML component. When WinML EP plugin DLLs
-    # are loaded (via EpCatalog), they import "onnxruntime.dll" by base name
-    # and the loader binds them to the system copy, producing
-    # "The requested API version [N] is not available" errors.
-    # Loading the wheel-bundled DLL by full path first makes later base-name
-    # imports resolve to the already-loaded module.
-    if sys.platform != "win32":
-        return
-    try:
-        import ctypes
-        import os
-        from importlib.util import find_spec
-        from pathlib import Path
-
-        spec = find_spec("onnxruntime")
-        if spec is None or spec.origin is None:
-            return
-        dll = Path(spec.origin).parent / "capi" / "onnxruntime.dll"
-        if not dll.is_file():
-            return
-        os.add_dll_directory(str(dll.parent))
-        ctypes.WinDLL(str(dll))
-    except Exception as _e:  # pragma: no cover - best-effort preload
-        print(f"Warning: failed to preload bundled onnxruntime.dll: {_e}", file=sys.stderr)
-
-
-_preload_bundled_onnxruntime_dll()
-
 # _warnings configures filters before any subpackage imports.
 from . import _warnings