remove icons to avoid trouble

Author: FaffeF

manifests/t/tstack/lnav/0.13.1-beta1/tstack.lnav.locale.en-US.yaml

@@ -32,7 +32,4 @@ Tags:
 ReleaseNotesUrl: https://lnav.org/blog
 ManifestType: defaultLocale
 ManifestVersion: 1.10.0
-Icons:
-  - IconUrl: https://raw.githubusercontent.com/tstack/lnav/v0.13.0/docs/assets/images/favicon.png
-    IconFileType: png
 ReleaseNotes: https://lnav.org/blog/