Remove info-frontend / licencefinder

Both apps are retired. I've left the info-frontend rendering app value
as this is still used by Maslow.

Author: 1pretz1

content_schemas/formats/shared/definitions/publishing_app.jsonnet

@@ -16,8 +16,6 @@
       "frontend",
       "government-frontend",
       "hmrc-manuals-api",
-      "info-frontend",
-      "licencefinder",
       "local-links-manager",
       "manuals-publisher",
       "maslow",

content_schemas/formats/shared/definitions/rendering_app.jsonnet

@@ -15,7 +15,6 @@
       "frontend",
       "government-frontend",
       "info-frontend",
-      "licencefinder",
       "performanceplatform-big-screen-view",
       "rummager",
       "search-api",