Remove taxon icons

These icons are inconsistently used across instances and have already been removed in a few places in the app in the mobile UX redesign.

app/models/spree/taxon_decorator.rb

@@ -1,9 +1,6 @@
 Spree::Taxon.class_eval do
   has_many :classifications, dependent: :destroy
 
-  attachment_definitions[:icon][:path] = 'public/images/spree/taxons/:id/:style/:basename.:extension'
-  attachment_definitions[:icon][:url] = '/images/spree/taxons/:id/:style/:basename.:extension'
-
   # Indicate which filters should be used for this taxon
   def applicable_filters
     fs = []

app/serializers/api/taxon_serializer.rb

@@ -2,9 +2,5 @@ class Api::TaxonSerializer < ActiveModel::Serializer
   cached
   delegate :cache_key, to: :object
 
-  attributes :id, :name, :permalink, :icon, :pretty_name, :position, :parent_id, :taxonomy_id
-
-  def icon
-    object.icon(:original)
-  end
+  attributes :id, :name, :permalink, :pretty_name, :position, :parent_id, :taxonomy_id
 end

app/views/producers/_fat.html.haml

@@ -22,7 +22,6 @@
       %p.trans-sentence
         %div
           %span.fat-taxons{"ng-repeat" => "taxon in producer.supplied_taxons"}
-            %render-svg{path: "{{taxon.icon}}"}
             %span{"ng-bind" => "::taxon.name"}
         %div
           %span.fat-properties{"ng-repeat" => "property in producer.supplied_properties"}

app/views/shop/products/_summary.html.haml

@@ -18,4 +18,3 @@
           %span{"ng-bind" => "::enterprise.name"}
   .small-2.medium-2.large-1.columns.text-center
     .taxon-flag
-      %render-svg{path: "{{::product.primary_taxon.icon}}"}

app/views/shops/_fat.html.haml

@@ -10,7 +10,6 @@
       .trans-sentence
         %div
           %span.fat-taxons{"ng-repeat" => "taxon in hub.taxons"}
-            %render-svg{path: "{{taxon.icon}}"}
             %span{"ng-bind" => "::taxon.name"}
         %div
           %span.fat-properties{"ng-repeat" => "property in hub.distributed_properties"}

app/views/spree/admin/taxons/_form.html.haml

@@ -12,11 +12,6 @@
       %br/
       = @taxon.permalink.split("/")[0...-1].join("/") + "/"
       = text_field_tag :permalink_part, @permalink_part
-    = f.field_container :icon do
-      = f.label :icon, t(:icon)
-      %br/
-      = f.file_field :icon
-      %img{src: @taxon.icon(:original)}
     = f.field_container :meta_title do
       = f.label :meta_title, t(:meta_title)
       %br/