The SE?
Remove it, plenty of guides here
I haven’t done mine yet - but have all the bits, for when the time comes
I bought the correct 1150 Adv rear brake hose for a non ABS Adv - £45 from BMW’s
A u shaped brake union adapter from
Motorworks £12
A neat stainless bracket from USA for the ecu on the ABS pump (chap on AdvRider sells them) so you can bolt to battery tray and seals up against water/dirt ingress - cost £35
That is all you need at most and them just plumb the mc to the callipers, via the existing brake lines and Change the rear hose (not necessary but the non abs version looks neater)
When I do it I want to remove the abs rings and sensors from the wheels too (except rear sensor, unless I can find a blanking plate solution or non abs rear bevel)