Remove image_* columns from asciicasts

app/helpers/asciicasts_helper.rb

@@ -47,8 +47,7 @@ module AsciicastsHelper
   def embed_html_link(asciicast)
     img_src = asciicast_url(asciicast, format: :png)
     url = asciicast_url(asciicast)
-    width = %{width="#{asciicast.image_width}"} if asciicast.image_width
-    %(<a href="#{url}" target="_blank"><img src="#{img_src}" #{width}/></a>)
+    %(<a href="#{url}" target="_blank"><img src="#{img_src}" /></a>)
   end
 
   def embed_markdown_link(asciicast)

app/models/asciicast.rb

@@ -8,7 +8,6 @@ class Asciicast < ActiveRecord::Base
   mount_uploader :stdout_timing, StdoutTimingUploader
   mount_uploader :stdout_frames, StdoutFramesUploader
   mount_uploader :file, AsciicastUploader
-  mount_uploader :image, ImageUploader
 
   serialize :snapshot, ActiveSupportJsonProxy
 
@@ -151,12 +150,6 @@ class Asciicast < ActiveRecord::Base
     end
   end
 
-  def image_hash
-    version = 2 # version of screenshot, increment to force regeneration
-    input = "#{version}/#{id}/#{snapshot_at}"
-    Digest::SHA1.hexdigest(input)
-  end
-
   def generate_secret_token
     begin
       self.secret_token = self.class.generate_secret_token

app/uploaders/image_uploader.rb

@@ -1,2 +0,0 @@
-class ImageUploader < BaseUploader
-end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170215120234) do
+ActiveRecord::Schema.define(version: 20170607190249) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -56,9 +56,6 @@ ActiveRecord::Schema.define(version: 20170215120234) do
     t.float    "snapshot_at"
     t.integer  "version",                          null: false
     t.string   "file"
-    t.string   "image"
-    t.integer  "image_width"
-    t.integer  "image_height"
     t.string   "secret_token",                     null: false
     t.boolean  "private",          default: false, null: false
   end