Adapt text of project/README.md to v0.2.x series

Author: dalito

template/project/README.md.jinja

@@ -4,6 +4,3 @@ This directory holds the output generated with [LinkML generators](https://linkm
 from the model in `src/{{project_slug}}/datamodel/schema/{{project_slug}}.yaml`.
 Generators transform a linkml schema into another datamodel such as SQL or RDF, or into other artefacts,
 such as JSON-Schema, a visualisation, or markdown documentation.
-
-In a future version of the template this directory will be empty except for the readme.
-Thereby updating the template will never interfere with code that you generated from your model.