Remove linking references from the Console

[adriansmares]

Summary

References #3263

We should remove any linking references from the Console in the 3.11 branch.

Why do we need this?

Linking has been completely removed as of #3263, both from the AS and from the NS. Fundamentally the only thing that is still part of the ttnpb.ApplicationLink is the default payload formatter and the application-wide skip-payload-encryption option, but any linking options such as NS address or API key are now gone.

What is already there? What do you see now?

1. Automatic link creation on application creation.
2. Application link status page

What is missing? What do you want to see?

Both should be removed.

Environment

3.11

How do you propose to implement this?

I suppose it's just deleting the forms / logic. One thing to look into is if updates to the application payload formatter still work (not sure if they are currently dependent on the existence of the link ?)

Can you do this yourself and submit a Pull Request?

I can review this.