Revert changes in Budget::Investment model that added image attachment directly

app/models/budget/investment.rb

@@ -1,7 +1,5 @@
 class Budget
   class Investment < ActiveRecord::Base
-    MIN_SIZE = 475
-
     include Measurable
     include Sanitizable
     include Taggable
@@ -19,7 +17,6 @@ class Budget
     acts_as_paranoid column: :hidden_at
     include ActsAsParanoidAliases
 
-    has_attached_file :image, styles: { large: "x#{MIN_SIZE}", medium: "300x300#", thumb: "140x245#" }
 
     belongs_to :author, -> { with_hidden }, class_name: 'User', foreign_key: 'author_id'
     belongs_to :heading
@@ -42,10 +39,6 @@ class Budget
     validates :title, length: { in: 4..Budget::Investment.title_max_length }
     validates :description, length: { maximum: Budget::Investment.description_max_length }
     validates :terms_of_service, acceptance: { allow_nil: false }, on: :create
-    validates_attachment :image, content_type: { content_type: ["image/jpeg"] }
-    validates :image_title, presence: true, if: -> { image.present? }
-    validates :image_title, length: { in: 4..Budget::Investment.title_max_length }, if: -> { image.present? }
-    validate :check_image_dimensions
 
     scope :sort_by_confidence_score, -> { reorder(confidence_score: :desc, id: :desc) }
     scope :sort_by_ballots,          -> { reorder(ballot_lines_count: :desc, id: :desc) }
@@ -274,18 +267,5 @@ class Budget
         self.budget_id ||= heading.try(:group).try(:budget_id)
       end
 
-      def check_image_dimensions
-        temp_file = image.queued_for_write[:original]
-        unless temp_file.nil?
-          dimensions = Paperclip::Geometry.from_file(temp_file)
-          width = dimensions.width
-          height = dimensions.height
-
-          if width < MIN_SIZE || height < MIN_SIZE
-            errors['image'] << I18n.t("budgets.investments.edit_image.invalid_dimmensions")
-          end
-        end
-      end
-
   end
 end