fix: removed skiff (defunct and shutting down in 6 months)

You should remove Skiff since they are defunct and shutting down service in 6 months.  See <https://skiff.com/data-migration>.

APPSTORE.md

@@ -316,11 +316,6 @@ Jump to
   - [` App Store`](https://apps.apple.com/app/id874139669) <a href='https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/57/62/68/576268bf-3474-99e7-2621-adbf2438b3ce/pr_source.png/460x0w.jpg'>`Screenshot 1`</a>  <a href='https://is4-ssl.mzstatic.com/image/thumb/Purple123/v4/b8/d3/7a/b8d37a2b-3ecc-8775-3ce1-534d0adc2904/pr_source.png/460x0w.jpg'>`Screenshot 2`</a>  <a href='https://is4-ssl.mzstatic.com/image/thumb/Purple123/v4/11/82/fc/1182fc57-5a43-4403-1048-47735d0a75f7/pr_source.png/460x0w.jpg'>`Screenshot 3`</a>  <a href='https://is3-ssl.mzstatic.com/image/thumb/Purple113/v4/65/78/39/6578398d-7204-d380-cf59-783acd3fa859/pr_source.png/460x0w.jpg'>`Screenshot 4`</a> 
   -  `2024` `objc` `iphone` `carthage` `socketrocket` `purelayout` `openssl` 
   -  ☆`10320` 
-- [Skiff Mail](https://github.com/skiff-org/skiff-apps): Encrypted & Decentralized Email
-  - <a href=https://skiff.com/mail>`https://skiff.com/mail`</a>
-  - [` App Store`](https://apps.apple.com/app/id1619168801) <a href='https://user-images.githubusercontent.com/1927690/166390238-fe78fedd-41c6-48ee-a4c5-efcb3f1cfa78.png'>`Screenshot 1`</a>  <a href='https://user-images.githubusercontent.com/1927690/166291826-bf21933f-f637-4756-9951-ac5a1e69be0f.png'>`Screenshot 2`</a> 
-  -  `2023` `typescript` 
-  -  ☆`942` 
 - [Telegram](https://github.com/TelegramMessenger/Telegram-iOS): Send messages with a focus on speed & security
   - [` App Store`](https://apps.apple.com/app/telegram-messenger/id686449807) <a href='https://is3-ssl.mzstatic.com/image/thumb/Purple123/v4/72/35/fb/7235fb9a-07fd-97f1-31f1-b4810f7cd1ca/pr_source.png/460x0w.jpg'>`Screenshot 1`</a>  <a href='https://is3-ssl.mzstatic.com/image/thumb/Purple113/v4/a2/e3/b4/a2e3b456-fdbc-77e6-d3f4-21e3d5998a79/pr_source.png/460x0w.jpg'>`Screenshot 2`</a>  <a href='https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/78/8d/f5/788df564-08d5-40fc-b18c-d153de535b35/pr_source.png/460x0w.jpg'>`Screenshot 3`</a>  <a href='https://is4-ssl.mzstatic.com/image/thumb/Purple123/v4/89/cf/cd/89cfcd2f-98dd-cbc0-e730-c7cb1854928c/pr_source.png/460x0w.jpg'>`Screenshot 4`</a>  <a href='https://is3-ssl.mzstatic.com/image/thumb/Purple113/v4/8e/6b/23/8e6b239b-28b1-bbe2-f89c-f9e6ea9969b1/pr_source.png/460x0w.jpg'>`Screenshot 5`</a> 
   -  `2024` `swift` `c` `objc`