Is there a way to quickly remove all connections on a maps svg. Without removing them one by one manually

Yup, but it will also remove all centerpoints, and which territories belong to which bonus.
Simply upload an empty svg file, and then reupload the map file. All territory data is now gone.

But why would you want to do that?

Well on my Mexico map I used the automatic territory connection tool and it made a bunch of errors so it will be easier to erase all the connections at once. Also thanks

Hmm, never done it automatically before. I have always done manual connections because it makes me evaluate the shapes I drew and whether they SHOULD connect. Sometimes you have a shape that barely touches another and you might want to alter the boundary. Doing manual connections allows for that evaluation.

But I have also never made a map with thousands of territories either (and never will).