Remove manifest that no longer works for Microsoft.EdgeBeta (#8427)

manifests/Microsoft/EdgeBeta/87.0.664.24.yaml

@@ -1,36 +0,0 @@
-# ================== General ==================
-Id: Microsoft.EdgeBeta
-Publisher: Microsoft
-Name: Microsoft Edge Beta
-Author: Microsoft
-Description: World-class performance with more privacy, more productivity, and more value while you browse.
-AppMoniker: msedge-beta
-Tags: Browser, Chromium
-FileExtensions: html, htm, url
-Protocols: http, https
-
-# ================== License ==================
-Homepage: https://www.microsoft.com/en-us/edge
-License: Copyright (C) Microsoft Corporation
-LicenseUrl: https://www.microsoft.com/en-us/servicesagreement/
-
-# ================= Installer =================
-MinOSVersion: 10.0.0.0
-#Channel: Beta                # Channel is not supported in this preview (5/24/2020)
-Version: 87.0.664.24
-
-InstallerType: msi
-Installers:
-  - Arch: x64
-    Url: https://msedge.sf.dl.delivery.mp.microsoft.com/filestreamingservice/files/0bdda995-2a66-43a6-9883-8e1fd7521262/MicrosoftEdgeBetaEnterpriseX64.msi
-    Sha256: 1433A142D49828501BCCB476EC7BF355BA3AAA7FDCAA45AA58BF45452D4E8AD4
-    ProductCode: "{E066A69C-CB1C-34DB-9D61-49F0CF24382F}"
-    Scope: machine
-    Language: en-US
-  #- Arch: x86                  # Support for multiple installers are not supported in this preview (5/24/2020)
-    #Url: http://dl.delivery.mp.microsoft.com/filestreamingservice/files/e05e5569-d55c-4f42-a14c-3b933df2f79f/MicrosoftEdgeBetaEnterpriseX86.msi
-    #Sha256: 872ce58991c4d93bbe812714ffac28cd111a44f85dcdf12d4a057ecfdd1db00e
-    #Scope: machine
-    #Language: en-US
-    
-# ManifestVersion: 0.1.0