Remove extraneous docstring

Author: davepeck

peps/pep-0750.rst

@@ -139,8 +139,6 @@ Template strings evaluate to an instance of a new type, ``<<TBD>>.Template``:
 .. code-block:: python
 
     class Template:
-        """Simulated implementation of the PEP750 Template type."""
-        
         strings: tuple[str, ...]
         """
         A tuple of the N+1 string parts of the template, where N is