remove kwargs grads

Author: Evgeny Tankhilevich

src/lib/array.jl

@@ -65,8 +65,7 @@ end
 
 @adjoint function reverse(x::AbstractArray, args...; kwargs...)
   _reverse(t) = reverse(t, args...; kwargs...)
-  _nothings(t) = map(_->nothing, keys(t))
-  _reverse(x), Δ->(_reverse(Δ), _nothings(args)..., _nothings(kwargs)...)
+  _reverse(x), Δ->(_reverse(Δ), map(_->nothing, args)...)
 end
 
 @adjoint permutedims(xs) = permutedims(xs), Δ -> (permutedims(Δ),)