Did you mean you would like to hide the e-sign options when users creating a new approval request?
To my knowledge currently it is not possible to hide these options.
While as a workaround, it is possible to disable the feature in Teams admin center as you already mentioned.
Once it is disabled, the users would get a message indicating they don't have access.
If it is still not working for you after some time, please clear the Teams cache and restart Teams.
If you would like to submit your feedback on this feature, please consider posting in the Teams feedback forum.
Thanks for your understanding.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.