misskey.sda1.net の爆散に伴い，記載を削除

Author: fiveseven-lambda

index.md

@@ -17,7 +17,7 @@
 
 # リンク
 - 𝕏: [@57tggx](https://x.com/57tggx)
-- Misskey: [@[email protected]](https://misskey.io/@five_seven) [@toga@misskey.sda1.net](https://misskey.sda1.net/@toga) [@57@sushi.ski](https://sushi.ski/@57)
+- Misskey: [@[email protected]](https://misskey.io/@five_seven) [@57@sushi.ski](https://sushi.ski/@57)
 - GitHub: [fiveseven-lambda](https://github.com/fiveseven-lambda)
 - Zenn: [toga](https://zenn.dev/toga)
 - SoundCloud: [57tggx](https://soundcloud.com/57tggx)