Remove FoundationRailsHelper, this is dead code now

Gemfile

@@ -112,7 +112,6 @@ gem 'momentjs-rails'
 gem 'turbo-sprockets-rails3'
 
 gem "foundation-rails"
-gem 'foundation_rails_helper', github: 'willrjmarshall/foundation_rails_helper', branch: "rails3"
 
 gem 'jquery-migrate-rails'
 gem 'jquery-rails', '3.1.5'

Gemfile.lock

@@ -65,16 +65,6 @@ GIT
       rails-i18n
       spree_core (>= 1.1)
 
-GIT
-  remote: https://github.com/willrjmarshall/foundation_rails_helper.git
-  revision: 4d5d53fdc4b1fb71e66524d298c5c635de82cfbb
-  branch: rails3
-  specs:
-    foundation_rails_helper (0.4)
-      actionpack (>= 3.0)
-      activemodel (>= 3.0)
-      railties (>= 3.0)
-
 PATH
   remote: engines/catalog
   specs:
@@ -740,7 +730,6 @@ DEPENDENCIES
   foreigner
   foundation-icons-sass-rails
   foundation-rails
-  foundation_rails_helper!
   fuubar (~> 2.5.0)
   geocoder
   gmaps4rails

app/helpers/application_helper.rb

@@ -1,6 +1,4 @@
 module ApplicationHelper
-  include FoundationRailsHelper::FlashHelper
-
   def feature?(feature)
     OpenFoodNetwork::FeatureToggle.enabled? feature
   end