My two cents, since it has come up.
Admittedly, it can be annoying at some point (I deploy often as well), and the toast even covers the tab bar in height completely, if you have unused configuration nodes... but I learned to live with it.
The deploy feature already has a nice representation by using the state of the deploy button, and it has an "in progress" animation.
So my suggestion: keep the position and everything as-is, but don't send a toast in the case where just "Successfully deployed" would be displayed. I think that would cover most of the cases here. I'd consider the deploy successful, if the button is disabled after, and there was no error message.
The toast should still be shown if there's an error or when there are unused config nodes, because that's something the user should be made aware of.