removed refernce to Bijectors.setadbackend

Author: torfjelde

src/essential/ad.jl

@@ -6,7 +6,6 @@ setadbackend(backend_sym::Symbol) = setadbackend(Val(backend_sym))
 function setadbackend(backend::Val)
     _setadbackend(backend)
     AdvancedVI.setadbackend(backend)
-    Bijectors.setadbackend(backend)
 end
 
 function _setadbackend(::Val{:forwarddiff})