Remove warning for missing networks

[reedsa]

What was wrong?

Network warnings visible when the network constants are out of date. There is no need to send warnings, especially since the core networks are already present. If a new network is needed, the script can be run separately to update the networks file.

How was it fixed?

Remove the warning for missing networks and allow initialization from the network list.

Todo:

• Clean up commit history
• Add or update documentation related to these changes
• Add entry to the release notes

Cute Animal Picture

[pacrob]

lgtm! I wouldn't worry about the windows wheel - this is old enough that we were relying on Circle CI images to have python versions installed rather than installing them ourselves, and py3.11 must have been removed

[reedsa]

Oh okay that's great news! Thanks for the review @pacrob 😺