Apply suggestions from code review

Author: mzgubic

src/rulesets/Base/nondiff.jl

@@ -293,8 +293,8 @@ VERSION >= v"1.4" && @non_differentiable only(::Char)
 
 @non_differentiable partialsort(::AbstractVector, ::Union{Integer,OrdinalRange})
 @non_differentiable partialsort!(::AbstractVector, ::Union{Integer,OrdinalRange})
-@non_differentiable partialsortperm(::AbstractVector{Any}, ::Union{Integer, OrdinalRange})
-@non_differentiable partialsortperm!(::AbstractVector{<:Integer}, ::AbstractVector{Any}, ::Union{Integer, OrdinalRange})
+@non_differentiable partialsortperm(::AbstractVector, ::Union{Integer, OrdinalRange})
+@non_differentiable partialsortperm!(::AbstractVector{<:Integer}, ::AbstractVector, ::Union{Integer, OrdinalRange})
 @non_differentiable pointer(::Any)
 @non_differentiable popdisplay(::AbstractDisplay)
 @non_differentiable position(::Base.Filesystem.File)
@@ -358,9 +358,9 @@ end
 @non_differentiable sleep(::Any)
 @non_differentiable sort(::AbstractVector)
 @non_differentiable sort!(::AbstractVector)
-@non_differentiable sortperm(::AbstractVector{Any})
+@non_differentiable sortperm(::AbstractVector)
 @non_differentiable sortperm!(::AbstractVector{<:Integer}, ::AbstractVector)
-@non_differentiable sortslices(A::AbstractArray)
+@non_differentiable sortslices(::AbstractArray)
 @non_differentiable split(::AbstractString)
 @non_differentiable split(::AbstractString, ::AbstractChar)
 @non_differentiable splitdir(::AbstractString)