Drop unused tables and columns

.gitignore

@@ -17,7 +17,6 @@
 
 # App artifacts
 /_build
-/db
 /deps
 /*.ez
 

db/migrate/20170607190249_remove_image_from_asciicasts.rb

@@ -0,0 +1,7 @@
+class RemoveImageFromAsciicasts < ActiveRecord::Migration
+  def change
+    remove_column :asciicasts, :image
+    remove_column :asciicasts, :image_width
+    remove_column :asciicasts, :image_height
+  end
+end

db/migrate/20170611171826_remove_comments_and_likes.rb

@@ -0,0 +1,8 @@
+class RemoveCommentsAndLikes < ActiveRecord::Migration
+  def change
+    remove_column :asciicasts, :comments_count
+    remove_column :asciicasts, :likes_count
+    drop_table :comments
+    drop_table :likes
+  end
+end