Delete appstore directory

appstore/mailserver/data.yml

@@ -1,14 +0,0 @@
-additionalProperties:
-  key: mailserver
-  name: Mailserver
-  tags:
-    - Email
-    - Local
-  shortDescZh: 可用于生产的全栈但简单的邮件服务器
-  shortDescEn: A fullstack but simple mail server (smtp, imap, antispam, antivirus, etc.)
-  type: runtime
-  crossVersionUpdate: true
-  limit: 0
-  website: https://docker-mailserver.github.io/docker-mailserver/latest/
-  github: https://github.com/docker-mailserver/docker-mailserver/
-  document: https://docker-mailserver.github.io/docker-mailserver/latest/