Remove manifest that no longer works for ClassIn version 3.0.7.1 (#7050)

manifests/eeo/classin/3.0.7.1.yaml

@@ -1,34 +0,0 @@
-# ================== General ==================
-Id: eeo.classin
-Publisher: eeo
-Name: ClassIn
-Author: eeo
-Description: Online teaching platform
-AppMoniker: classin
-Tags: course, class, teaching
-
-# ================== License ==================
-Homepage: https://www.classin.com/en/
-License: Copyright (c) eeo
-LicenseUrl: https://www.classin.com/en/support.html?aid=655&title=userAgreement
-
-# ================= Installer =================
-MinOSVersion: 10.0.0.0
-#Channel: stable                # Channel is not supported in this preview (5/24/2020)
-Version: 3.0.7.1
-
-Switches:
-      Custom: /SP- /NORESTART
-      Silent: /VERYSILENT
-      SilentWithProgress: /SILENT
-      #Interactive:             # Interactive is not supported in this preview (5/24/2020)
-      #Language: en-US          # Language is not supported in this preview (5/24/2020)
-
-InstallerType: inno
-Installers:
-  - Arch: x86
-    Url: https://download.eeo.cn/classin_win_install_3.0.7.1_s.exe
-    Sha256: ad94d9e9b0d891ceda1ea2cb2544df6d397167d6d412a47ce2e6ee4f3751abc4
-    #Scope: machine             # Scope is not supported in this preview (5/24/2020)
-    
-# ManifestVersion: 0.1.0