Remove old version for Waterfox.Waterfox (#13785)

manifests/w/Waterfox/Waterfox/2020.10.0/Waterfox.Waterfox.yaml

@@ -1,27 +0,0 @@
-PackageIdentifier: Waterfox.Waterfox
-PackageName: Waterfox
-PackageVersion: 2020.10.0
-Publisher: Waterfox
-Moniker: waterfox
-License: Mozilla Public License
-LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
-PackageUrl: https://www.waterfox.net/
-FileExtensions:
-- html
-- htm
-- pdf
-Tags:
-- browser
-- gecko
-- firefox
-- mozilla
-- waterfox
-ShortDescription: Browse the web your way, with the indie web browser.
-Installers:
-- Architecture: x64
-  InstallerType: nullsoft
-  InstallerUrl: https://cdn.waterfox.net/releases/win64/installer/Waterfox%20Current%202020.10%20Setup.exe
-  InstallerSha256: 9f6c948b625f20f7fd7ad9e7918743c5e06ba99bce7a7dffc3bb686b4e38b834
-PackageLocale: en-US
-ManifestType: singleton
-ManifestVersion: 1.0.0