Task Reassignment Issue: Auto-Assignment to Job Role on User De-assignment

Hello Adobe Workfront team,

Whenever a User is de-assigned from a Task; its Auto Assigned to the User’s Job Role. 
We don’t use the Workload / Resource planner functionality. 

Therefore this functionality of auto assignments to Job role, serves no benefit. 
Moreover its cumbersome, as a user has to remove a user from a Task & also remove the job owner role from the task even if the user was accidentally added.

Can you therefore make this Auto assignment to Job-role functionality as optional (perhaps a system-wide setting that could toggle it on/off).

Thanks

Harish