Revert "Pixiv: don't blacklist digital tools"

This reverts commit e83d07ea7b.

It was worth a try, but unfortunately it seems that once
someone sets tools in a Pixiv upload, they become defaults and
are applied to all of their subsequent uploads, so we get some
posts with two or three different digital tags.

test/unit/sources/pixiv_test.rb

@@ -249,6 +249,10 @@ module Sources
           assert_includes(@translated_tags, "foo")
         end
 
+        should "not translate tags for digital media" do
+          assert_equal(false, @tags.include?("Photoshop"))
+        end
+
         should "normalize 10users入り tags" do
           assert_includes(@tags, "風景10users入り")
           assert_includes(@translated_tags, "scenery")
@@ -280,7 +284,7 @@ module Sources
         should "not translate '1000users入り' to '1'" do
           FactoryBot.create(:tag, name: "1", post_count: 1)
           source = get_source("https://www.pixiv.net/member_illust.php?mode=medium&illust_id=60665428")
-          tags = %w[1000users入り Fate/GrandOrder アルジュナ(Fate) アルトリア・ペンドラゴン イシュタル(Fate) グランブルーファンタジー マシュ・キリエライト マーリン(Fate) 両儀式 手袋 CLIP\ STUDIO\ PAINT Photoshop]
+          tags = %w[1000users入り Fate/GrandOrder アルジュナ(Fate) アルトリア・ペンドラゴン イシュタル(Fate) グランブルーファンタジー マシュ・キリエライト マーリン(Fate) 両儀式 手袋]
 
           assert_equal(tags.sort, source.tags.map(&:first).sort)
           assert_equal(["fate/grand_order"], source.translated_tags.map(&:name))