Yes, please do complete the Schedule SE-T.
The Schedule SE-T is the schedule that calculates the self-employment tax for the "taxpayer" (1st taxpayer listed on the return) on his clergy income and housing allowance. It is linked to the clergy income subject to self-employment tax which is why you are unable to delete it.
The T following the schedule name is for the owner of the form, your husband the taxpayer.
It is not a part of deferring self-employment tax, but instead, calculating it.
Please do fill it out.
