remove old version 2.8.0.16 (#6828)

Co-authored-by: Chris Lovett <clovett@microsoft.com>

manifests/Microsoft/XMLNotepad/2.8.0.16.yaml

@@ -1,20 +0,0 @@
-Id: Microsoft.XMLNotepad
-Author: Chris Lovett
-Publisher: Microsoft Corporation
-Name: XML Notepad
-Version: 2.8.0.16
-License: Copyright (C) Microsoft Corporation
-LicenseUrl: https://github.com/microsoft/XmlNotepad/blob/master/LICENSE
-MinOSVersion: 10.0.18362.0
-FileExtensions: xml
-AppMoniker: xmlnotepad
-Tags: xml editor, xml
-Description: XML Notepad is a lightweight and fast tool for editing XML documents.
-Homepage: https://github.com/microsoft/xmlnotepad
-Installers:
-  - Arch: Neutral
-    InstallerType: MSIX
-    Url: http://www.lovettsoftware.com/Downloads/XmlNotepad.Net/XmlNotepadPackage_2.8.0.16_Test/XmlNotepadPackage_2.8.0.16_AnyCPU.msixbundle
-    Sha256: 6aeb961cc3d85bf910dd21db2e99c8f5552b484f0708e2172e3c79954fabe557
-    Language: en
-# Generated by https://github.com/ptorr-msft/WinGetYamlGenerator