Remove dead code

src/Utilities/copy.jl

@@ -154,85 +154,6 @@ function _pass_attribute(
     return
 end
 
-"""
-    _try_constrain_variables_on_creation(
-        dest::MOI.ModelLike,
-        src::MOI.ModelLike,
-        index_map::IndexMap,
-        ::Type{S},
-    ) where {S<:MOI.AbstractVectorSet}
-
-Copy the constraints of type `MOI.VectorOfVariables`-in-`S` from the model `src`
-to the model `dest` and fill `index_map` accordingly. The copy is only done when
-the variables to be copied are not already keys of `index_map`.
-
-It returns a list of the constraints that were not added.
-"""
-function _try_constrain_variables_on_creation(
-    dest::MOI.ModelLike,
-    src::MOI.ModelLike,
-    index_map::IndexMap,
-    ::Type{S},
-) where {S<:MOI.AbstractVectorSet}
-    not_added = MOI.ConstraintIndex{MOI.VectorOfVariables,S}[]
-    for ci_src in
-        MOI.get(src, MOI.ListOfConstraintIndices{MOI.VectorOfVariables,S}())
-        f_src = MOI.get(src, MOI.ConstraintFunction(), ci_src)
-        if !allunique(f_src.variables)
-            # Can't add it because there are duplicate variables
-            push!(not_added, ci_src)
-        elseif any(vi -> haskey(index_map, vi), f_src.variables)
-            # Can't add it because it contains a variable previously added
-            push!(not_added, ci_src)
-        else
-            set = MOI.get(src, MOI.ConstraintSet(), ci_src)::S
-            vis_dest, ci_dest = MOI.add_constrained_variables(dest, set)
-            index_map[ci_src] = ci_dest
-            for (vi_src, vi_dest) in zip(f_src.variables, vis_dest)
-                index_map[vi_src] = vi_dest
-            end
-        end
-    end
-    return not_added
-end
-
-"""
-    _try_constrain_variables_on_creation(
-        dest::MOI.ModelLike,
-        src::MOI.ModelLike,
-        index_map::IndexMap,
-        ::Type{S},
-    ) where {S<:MOI.AbstractScalarSet}
-
-Copy the constraints of type `MOI.VariableIndex`-in-`S` from the model `src` to
-the model `dest` and fill `index_map` accordingly. The copy is only done when the
-variables to be copied are not already keys of `index_map`.
-
-It returns a list of the constraints that were not added.
-"""
-function _try_constrain_variables_on_creation(
-    dest::MOI.ModelLike,
-    src::MOI.ModelLike,
-    index_map::IndexMap,
-    ::Type{S},
-) where {S<:MOI.AbstractScalarSet}
-    not_added = MOI.ConstraintIndex{MOI.VariableIndex,S}[]
-    for ci_src in
-        MOI.get(src, MOI.ListOfConstraintIndices{MOI.VariableIndex,S}())
-        f_src = MOI.get(src, MOI.ConstraintFunction(), ci_src)
-        if haskey(index_map, f_src)
-            # Can't add it because it contains a variable previously added
-            push!(not_added, ci_src)
-        else
-            set = MOI.get(src, MOI.ConstraintSet(), ci_src)::S
-            vi_dest, ci_dest = MOI.add_constrained_variable(dest, set)
-            index_map[ci_src] = ci_dest
-            index_map[f_src] = vi_dest
-        end
-    end
-    return not_added
-end
-
 """
     _copy_constraints(
         dest::MOI.ModelLike,