Remove pkg_resources in preparation for its deprecation. (#1116)

Author: NAThompson

tsfresh/__init__.py

@@ -9,10 +9,10 @@
 """
 
 
-import pkg_resources
+from importlib.metadata import version
 
 try:
-    __version__ = pkg_resources.get_distribution(__name__).version
+    __version__ = version("tsfresh")
 except Exception:
     __version__ = "unknown"