Remove active collab api token from config/code

[LiamKarlMitchell]

It causes issues in newer version of Active Collab which complains about it being sent in the headers.
Looks like they want it to login through email/pass :(

For now make sure the ActiveCollab apiToken is not set.
Interestingly for existing users with tokens from before upgrade, it still seems to function.

"ActiveCollab": {
"apiToken": ""
}