Remove specific location of data files

In Keith's absence and to get this RFC over the line I have updated the
RFC to reflect that the data files if they exist should be co-located,
but the exact location is yet to be determined.

rfc-175-frontend-fewer-apps.md

@@ -119,9 +119,7 @@ The host app will follow the default MVC structure of Rails applications, with s
 │   ├── presenters
 │   ├── views
 ├── config
-│   ├── data
 │   ├── locales
-├── data
 ├── lib
 │   ├── tasks
 └── .gitignore
@@ -147,15 +145,11 @@ Use `lib` rather than `app/lib` for custom code that enhances the app but doesn
 
 Under `/config`
 
-`data`
-- YAML, JSON, CSV config files. Data files should be placed here if they are clearly used in the configuration of the app. Ideally, though, we should **avoid using data files** for configuration where possible (see `/data` below)
-
 `locales`
 - Static content like lists of contact information should ideally be stored in the locale files to promote localisation.
 
-Under `/data`
 
-- YAML, JSON, CSV files used as data by Models. However, note that ideally we should **avoid using data files** - where possible, all information required for rendering should come from the content item or other APIs or be a static part of the app.
+We should **avoid using data files** - where possible, all information required for rendering should come from the content item or other APIs or be a static part of the app. For that reason they have been left out of the directory structure. However, if data files are required in the future they should co-located.
 
 
 Namespaces will be used to group functionality e.g. for StepBySteps, and resources in the routes file. This structure will be documented in README of the host app.