diff --git a/Orb_AutFN.jl b/Orb_AutFN.jl
index deb9491..324774b 100644
--- a/Orb_AutFN.jl
+++ b/Orb_AutFN.jl
@@ -54,7 +54,6 @@ function sparsify!{T}(U::SparseMatrixCSC{T}, eps=eps(T))
 end
 
 sparsify{T}(U::SparseMatrixCSC{T}, eps=eps(T)) = sparsify!(deepcopy(U), eps)
-small_to_zero!{T}(A::AbstractArray{T}, eps=eps(T)) = A[abs(A) .< eps] = zero(T)
 
 function init_model(Uπs)
     m = JuMP.Model();