Consider seeking an arbiter to resolve the authorship dispute
Another answer here deals with copyright, but there are broader rules in academia relating to proper attribution of work to its authors. If your colleague attempts to publish a stripped-down version of this paper without acknowledging you as a coauthor, that could potentially constitute a form of academic dishonesty, insofar as it misleads the reader as to the authorship of the work. You have informed your coauthor that you do not agree to be removed as an author from the research, so your coauthor is in a precarious and dangerous position if they take action to publish without you.
As a general rule, in the event of disputes about authorship, a reasonable approach is to speak to your university to see if they can assign an experienced academic as a mediator or arbiter to settle the authorship dispute. You should speak to your coauthor to see if they are happy to agree to appointment of such a person, to make a determination on what should occur. If you are part of the same university then you could ask for the ethics office to appoint someone, and if you are in different institutions then you could agree on someone that you both consider to be independent and experienced in research publication. If you can obtain an experienced independent academic in your field to act in this role then they will be familiar with rules/conventions for authorship and they will be able to give you a sensible determination of what the authorship/acknowledgement should be on any paper you produce on the subject, either together or independently. If you and your coauthor are at the same university then this could have the force of a determination from your employer; otherwise it would need to be done by agreement.
One "carrot" for this approach is that without an agreement or binding arbitration on the authorship, neither of you will be in a good position to publish anything coming out of the research without raising risks of misattribution. Your coauthor may be willing to agree to a mediator/arbitrator if this appears to be the only option to publish the relevant research. I recommend you speak to your coauthor to find out the reason for their preference to remove you, discuss possible options for moving forward, and consider using a mediator/arbitrator in the event that there is no agreement on authorship.