Make the base case for RemoveAullAux be Nil rather than singleton
Make the base case for RemoveAullAux be Nil rather than singleton

Signed-off-by: Michael Donaghy <0c7c2192f1d8016c998a0014621cb80467d8c33a@srcf.ucam.org>
milessabin/shapeless,clhodapp/shapeless,isaka/shapeless,lukasz-golebiewski/shapeless,wheaties/shapeless,liff/shapeless,Atry/shapeless,tek/shapeless,khronnuz/shapeless,fthomas/shapeless,TomasMikula/shapeless,notxcain/shapeless,malcolmgreaves/shapeless,triggerNZ/shapeless,joescii/shapeless,lambdista/shapeless,roberth/shapeless,alexarchambault/shapeless