Right, you have an ABS equipped car. Removing the ABS from that car is a right old hassle, and more work than it is worth. Removing the sensors from the front hubs will just mean you have your ABS light on all the time and is an MOT failure.
The easiest way to resolve this whole thing is to take the trailing arms from the original beam and put them onto your new beam. You may want to take the opportunity to check the shafts that come off your original beam and the bearings in your new beam to make sure both are good. Replace if necessary. Put it all back together, bleed the system and you should have fully functional brakes and ABS.
If at all unsure, don't f*ck about with things like brakes. Get it to someone who knows.
The easiest way to resolve this whole thing is to take the trailing arms from the original beam and put them onto your new beam. You may want to take the opportunity to check the shafts that come off your original beam and the bearings in your new beam to make sure both are good. Replace if necessary. Put it all back together, bleed the system and you should have fully functional brakes and ABS.
If at all unsure, don't f*ck about with things like brakes. Get it to someone who knows.