Update documentation for Pydantic's BaseModel

Removed note about BaseModel usage in Pydantic.

docs/en/docs/tutorial/body.md

@@ -20,13 +20,6 @@ As it is discouraged, the interactive docs with Swagger UI won't show the docume
 
 ## Import Pydantic's `BaseModel` { #import-pydantics-basemodel }
 
-/// note
-
-`BaseModel` is the main class from Pydantic used for creating data models.
-FastAPI needs this import to validate request bodies and generate documentation.
-
-///
-
 First, you need to import `BaseModel` from `pydantic`:
 
 {* ../../docs_src/body/tutorial001_py310.py hl[2] *}