relinquish_folder_membership

[relinquish_folder_membership](https://www.dropbox.com/developers/documentation/http/documentation#sharing-relinquish_folder_membership) scope: `sharing.write` The current user relinquishes their membership in the designated shared folder and will no longer have access to the folder. A folder owner cannot relinquish membership in their own folder. This will run synchronously if leave_a_copy is false, and asynchronously if leave_a_copy is true.