fix(frontend-python): Ignore pkg_resources warning

frontends/concrete-python/concrete/__init__.py

@@ -1,7 +1,9 @@
 """
 Setup concrete namespace.
 """
-
+import warnings
 # Do not modify, this is to have a compatible namespace package
 # https://packaging.python.org/en/latest/guides/packaging-namespace-packages/#pkg-resources-style-namespace-packages
-__import__("pkg_resources").declare_namespace(__name__)  # pragma: no cover
+with warnings.catch_warnings():
+    warnings.simplefilter("ignore")
+    __import__("pkg_resources").declare_namespace(__name__)  # pragma: no cover