Fix Lint/DuplicateRequire issue

- updates the todo list

.rubocop_todo.yml

@@ -28,12 +28,6 @@ Lint/DuplicateMethods:
   Exclude:
     - 'lib/discourse/single_sign_on.rb'
 
-# Offense count: 1
-# This cop supports unsafe autocorrection (--autocorrect-all).
-Lint/DuplicateRequire:
-  Exclude:
-    - 'spec/lib/open_food_network/scope_variants_to_search_spec.rb'
-
 # Offense count: 16
 # Configuration parameters: AllowComments, AllowEmptyLambdas.
 Lint/EmptyBlock:

spec/lib/open_food_network/scope_variants_to_search_spec.rb

@@ -2,7 +2,6 @@
 
 require 'spec_helper'
 require 'open_food_network/scope_variants_for_search'
-require 'spec_helper'
 
 describe OpenFoodNetwork::ScopeVariantsForSearch do
   let!(:p1) { create(:simple_product, name: 'Product 1') }