Moving to importlib_metadata 0.9 or 0.17 on defaults channel
We should be using that instead of our own custom built version.
This will require we:
- Drop the recipe
- Bump the build number and package requirements on the recipe of
conda/pre-committo force the use of the version on the defaults channel
This is not a runtime dependence of any of our packages (it is used for development only). We could also remove the versions of the package we distribute to clean-up new installs.