Remove manifest that no longer works for Microsoft Edge Dev version 86.0.622.3 (#6174)

manifests/Microsoft/EdgeDev/86.0.622.3.yaml

@@ -1,35 +0,0 @@
-# ================== General ==================
-Id: Microsoft.EdgeDev
-Publisher: Microsoft
-Name: Microsoft Edge Dev
-Author: Microsoft
-Description: World-class performance with more privacy, more productivity, and more value while you browse.
-AppMoniker: msedge-dev
-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: Dev                # Channel is not supported in this preview (5/24/2020)
-Version: 86.0.622.3
-
-InstallerType: msi
-Installers:
-  - Arch: x64
-    Url: http://dl.delivery.mp.microsoft.com/filestreamingservice/files/90fb4f35-6e47-4e81-87bb-da7b1777dddd/MicrosoftEdgeDevEnterpriseX64.msi
-    Sha256: 9eb772ad2d601a4d8c5c8e03a379a7c5d2b57f782f66672f9e8d561840101afe
-    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/04c622c4-1637-4400-bd92-3d15e4d92d66/MicrosoftEdgeDevEnterpriseX86.msi
-    #Sha256: 6368fc43a62c99148915f7e99a2b74e0ffb4e862f51035bb0d9c85db8edbcf66
-    #Scope: machine
-    #Language: en-US
-    
-# ManifestVersion: 0.1.0