posts: stop autotagging huge_filesize.

https://danbooru.donmai.us/forum_topics/19526

app/models/post.rb

@@ -460,7 +460,7 @@ class Post < ApplicationRecord
     end
 
     def add_automatic_tags(tags)
-      tags -= %w[incredibly_absurdres absurdres highres lowres huge_filesize flash video ugoira animated_gif animated_png exif_rotation non-repeating_animation]
+      tags -= %w[incredibly_absurdres absurdres highres lowres flash video ugoira animated_gif animated_png exif_rotation non-repeating_animation]
 
       if image_width >= 10_000 || image_height >= 10_000
         tags << "incredibly_absurdres"
@@ -481,10 +481,6 @@ class Post < ApplicationRecord
         tags << "tall_image"
       end
 
-      if file_size >= 10.megabytes
-        tags << "huge_filesize"
-      end
-
       if is_flash?
         tags << "flash"
       end

test/unit/post_test.rb

@@ -1382,18 +1382,6 @@ class PostTest < ActiveSupport::TestCase
         end
       end
 
-      context "with a large file size" do
-        setup do
-          @post.file_size = 11.megabytes
-          @post.tag_string = ""
-          @post.save
-        end
-
-        should "have the appropriate file size tags added automatically" do
-          assert_match(/huge_filesize/, @post.tag_string)
-        end
-      end
-
       context "with a .zip file extension" do
         setup do
           @post.file_ext = "zip"