__ssh_authorized_keys: remove legacy code

cdist/conf/type/__ssh_authorized_keys/manifest

@@ -45,18 +45,6 @@ if [ ! -f "$__object/parameter/noparent" ] || [ ! -f "$__object/parameter/nofile
    fi
 fi
 
-# Remove legacy blocks created by old versions of this type
-# FIXME: remove me in 3.2+
-__block "$__object_name" \
-   --file "$file" \
-   --prefix "#cdist:$__object_name" \
-   --suffix "#/cdist:$__object_name" \
-   --state 'absent' \
-   --text - << DONE
-remove legacy block
-DONE
-export require="__block/$__object_name"
-
 _cksum() {
    echo "$1" | cksum | cut -d' ' -f 1
 }