cleanup

Author: vyudu

src/systems/discrete_system/implicit_discrete_system.jl

@@ -384,8 +384,6 @@ function SciMLBase.ImplicitDiscreteFunction{iip, specialize}(
     else
         resid_prototype = calculate_resid_prototype(length(equations(sys)), u0, p)
     end
-    out = zeros(length(dvs))
-    u = zeros(length(dvs)) 
 
     if specialize === SciMLBase.FunctionWrapperSpecialize && iip
         if u0 === nothing || p === nothing || t === nothing