Remove manifest that no longer works for Microsoft Edge Dev version 86.0.615.3 (#6173)

manifests/Microsoft/EdgeDev/86.0.615.3.yaml

@@ -1,33 +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: 86.0.615.3
-
-InstallerType: msi
-Installers:
-  - Arch: x64
-    Url: http://dl.delivery.mp.microsoft.com/filestreamingservice/files/758647be-f560-49da-91b7-263d39309295/MicrosoftEdgeDevEnterpriseX64.msi
-    Sha256: 9f45bfaeabd6b590b45a37692fa1bc3b7a863fb25ac5bcb5ae30f55ac316bc00
-    Scope: machine
-  #- Arch: x86                  # Support for multiple installers are not supported in this preview (5/24/2020)
-    #Url: http://dl.delivery.mp.microsoft.com/filestreamingservice/files/e2488c9d-817a-4f9f-ad87-6a4a810f1b8b/MicrosoftEdgeDevEnterpriseX86.msi
-    #Sha256: 30f05d03e49a810a714ab6c747ab37354cd41670ea21316086ff66e8f77c68a0
-    #Scope: machine
-    
-# ManifestVersion: 0.1.0