Remove version file

src/mypackage/__init__.py

@@ -1,16 +1,12 @@
 from .mypackage import *
 from .cli import cli
 
-from pkg_resources import get_distribution, DistributionNotFound
-try:
-    VERSION = get_distribution(__name__).version
-except DistributionNotFound:
-    try:
-        from ._version import version as VERSION
-    except ImportError:
-        raise ImportError(
-            "Failed to find (autogenerated) _version.py. "
-            "This might be because you are installing from GitHub's tarballs, "
-            "use the PyPI ones."
-            )
-__version__ = VERSION
+# It used to be conventional to define a __version__ attribute.
+# However, it is now considered best practice to get version
+# information from the package metadata directly, eg by using
+# importlib.metadata.version (see below).
+#
+# If you still want to define __version__, uncomment the following:
+#
+# from importlib.metadata import version
+# __version__ = version(__package__ or __name__)