Revert "added a tip for the block tag"

This reverts commit 1a2175fc4992b74a473845eab0972d464086398f.

diff --git a/doc/functions/block.rst b/doc/functions/block.rst
index b7df6d8..fd571ef 100644 (file)
--- a/doc/functions/block.rst
+++ b/doc/functions/block.rst
@@ -12,10 +12,4 @@ times, use the ``block`` function:
 
     {% block body %}{% endblock %}
 
-.. tip::
-
-    Block names must only contain letters, numbers, and underscores (``_``).
-    The internal regexp reads as follows:
-    ``[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*``.
-
 .. seealso:: :doc:`extends<../tags/extends>`, :doc:`parent<../functions/parent>`