diff --git a/manifests/m/Mozilla/Thunderbird-cs/78.0/Mozilla.Thunderbird-cs.yaml b/manifests/m/Mozilla/Thunderbird-cs/78.0/Mozilla.Thunderbird-cs.yaml
deleted file mode 100644
index 7234cca97..000000000
--- a/manifests/m/Mozilla/Thunderbird-cs/78.0/Mozilla.Thunderbird-cs.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
-PackageIdentifier: Mozilla.Thunderbird-cs
-PackageVersion: 78.0
-PackageName: Thunderbird Czech
-Publisher: Mozilla
-License: Mozilla Public License Version 2.0
-LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
-Moniker: Mozilla.Thunderbird-cs
-Tags: []
-ShortDescription: Mozilla Thunderbird Czech
-PackageUrl: https://www.thunderbird.net/cs/
-Installers:
-- Architecture: x64
-  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/thunderbird/releases/78.0/win64/cs/Thunderbird%20Setup%2078.0.msi
-  InstallerSha256: 6778e294d3145e32d992fa484d8600215af93bb2380180c8015c395dc98ff79d
-  InstallerType: msi
-PackageLocale: en-US
-ManifestType: singleton
-ManifestVersion: 1.0.0