I removed the ABS from my 2003 R1150GS by making up a couple of copper pipes.
These are the front brake pipes under the tank.
The two pipes were removed back to the ABS unit and replaced by this copper loop.
These are the rear brake pipes which were removed.
I replaced them with this pipe and afterwards realised that the union could have been joined directly without the copper loop.
I then removed the complete ABS module to avoid carting around unnecessary junk.