Drop versioneer; hard-code the version, as for the Khiops binaries

Author: popescu-v

khiops/__init__.py

@@ -22,19 +22,16 @@
   (extension ".khcj")
 - sklearn: Scikit-Learn estimator classes to learn and use Khiops models
 """
-import importlib
-import importlib.util
+import importlib.metadata
 import os
 import sys
 import warnings
 from copy import copy
 from pathlib import Path
 
-from khiops._version import get_versions
 from khiops.core.internals.version import KhiopsVersion
 
-__version__ = get_versions()["version"]
-del get_versions
+__version__ = importlib.metadata.version("khiops")
 
 
 def get_compatible_khiops_version():