simplify actions of PermAut and FlipAut

src/AutGroup.jl

@@ -78,16 +78,10 @@ end
 
 function (σ::PermAut)(v, pow::Integer=1)
     w = deepcopy(v)
-   if pow == 1
-       @inbounds for k in eachindex(v)
-           v[k].symbols = w[σ.perm.d[k]].symbols
-       end
-   else
     s = (σ.perm^pow).d
     @inbounds for k in eachindex(v)
         v[k].symbols = w[s[k]].symbols
     end
-   end
     return v
 end