minor #4535 Remove the note about types mapping argument (fabpot)

This PR was merged into the 3.x branch.

Discussion
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Remove the note about types mapping argument

Refs #4532

Commits
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36ff3fa Remove the note about types mapping argument

doc/tags/types.rst

@@ -15,9 +15,6 @@ The ``types`` tag declares the types of template variables.
     included from multiple different places, each potentially having different
     variable types.
 
-To do this, specify a :ref:`mapping <twig-expressions>` of names to their types
-as strings.
-
 Here is how to declare that ``is_correct`` is a boolean, while ``score`` is a
 number (see note below):