Revert "Added uuid import and clarification text"

This reverts commit 0a1cacc.

Author: LUS24

docs/docs/05_flask_smorest/02_data_model_improvements/README.md

@@ -245,8 +245,6 @@ def create_store():
 <TabItem value="new" label="create_store (new)">
 
 ```py title="app.py"
-import uuid
-
 @app.post("/store")
 def create_store():
     store_data = request.get_json()
@@ -257,8 +255,6 @@ def create_store():
     return store
 ```
 
-Here we add a new import, [the `uuid` module](https://docs.python.org/3/library/uuid.html). We will be using it to create unique IDs for our items instead of relying on the uniqueness of their `names`.
-
 </TabItem>
 </Tabs>
 </div>