Remove old version for twitch.twitch (#13813)

manifests/t/Twitch/Twitch/8.0.0.0/twitch.twitch.yaml

@@ -1,23 +0,0 @@
-PackageIdentifier: twitch.twitch
-PackageVersion: 8.0.0.0
-PackageName: Twitch App for Windows
-Publisher: Twitch
-License: Copyright (c) Twitch Interactive, Inc.
-LicenseUrl: https://www.twitch.tv/p/legal/terms-of-service/
-Moniker: twitch
-ShortDescription: Client software for the video live streaming service operated by Twitch Interactive.
-Tags:
-- twitch
-- streaming
-PackageUrl: https://www.twitch.tv/
-InstallerType: exe
-Installers:
-- Architecture: x86
-  InstallerUrl: https://desktop.twitchsvc.net/installer/windows/TwitchSetup.exe
-  InstallerSha256: 9301E487CA4E73CCC320C25158356292FF25BC0A677A3EEF3ACF2027051A1B8C
-  InstallerSwitches:
-    Silent: /silent
-    SilentWithProgress: /silent
-PackageLocale: en-US
-ManifestType: singleton
-ManifestVersion: 1.0.0