I don't believe we have a tag called Biddr. If you send through the documentation of this tag to your Account Manager, we can get a request to add this to the Tag Market place.
In the mean time, we can get a custom container set up, to allow you to use this tag whilst the turnkey variant is being produced.
With regards to actively removing another 3rd script through Tealium on the page, we wouldn't be able to do this. I would suggest, that once you have had a tag created for this, we can clarify what exactly you are trying to achieve and work from there.