Remove legacy FOM branding configuration

Author: werrolf

application/app/config/parameters.yml.dist

@@ -24,10 +24,7 @@ parameters:
     ## For summary information / discussion see https://github.com/mapbender/mapbender/pull/1012
     ## For full project branding / versioning options, see code comment:
     ## https://github.com/mapbender/mapbender/blob/42e0f8b9a8031118719fc4881a92f0adab4ebacf/src/Mapbender/CoreBundle/DependencyInjection/Compiler/ProvideBrandingPass.php#L17
-    fom:
-        server_name:   Mapbender
-        server_version: 3.0.8
-        server_logo:   bundles/mapbendercore/image/logo_mb3.png
+    fom: ~
 
     # framework : http://symfony.com/doc/2.8/reference/configuration/framework.html#cookie-lifetime
     cookie_secure: false