Remove smartypants from LICENSE (#11152)

smartypants was removed from Sphinx in commit
ce31e1c

LICENSE

@@ -34,79 +34,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 Licenses for incorporated software
 ==================================
 
-The included smartypants module, included as sphinx.util.smartypants,
-is available under the following license:
-
-----------------------------------------------------------------------
-SmartyPants_ license::
-
-    Copyright (c) 2003 John Gruber
-    (https://daringfireball.net/projects/smartypants/)
-    All rights reserved.
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions
-    are met:
-
-    *   Redistributions of source code must retain the above copyright
-        notice, this list of conditions and the following disclaimer.
-
-    *   Redistributions in binary form must reproduce the above
-        copyright notice, this list of conditions and the following
-        disclaimer in the documentation and/or other materials
-        provided with the distribution.
-
-    *   Neither the name "SmartyPants" nor the names of its
-        contributors may be used to endorse or promote products
-        derived from this software without specific prior written
-        permission.
-
-    This software is provided by the copyright holders and
-    contributors "as is" and any express or implied warranties,
-    including, but not limited to, the implied warranties of
-    merchantability and fitness for a particular purpose are
-    disclaimed. In no event shall the copyright owner or contributors
-    be liable for any direct, indirect, incidental, special,
-    exemplary, or consequential damages (including, but not limited
-    to, procurement of substitute goods or services; loss of use,
-    data, or profits; or business interruption) however caused and on
-    any theory of liability, whether in contract, strict liability, or
-    tort (including negligence or otherwise) arising in any way out of
-    the use of this software, even if advised of the possibility of
-    such damage.
-
-
-smartypants.py license::
-
-    smartypants.py is a derivative work of SmartyPants.
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions
-    are met:
-
-    *   Redistributions of source code must retain the above copyright
-        notice, this list of conditions and the following disclaimer.
-
-    *   Redistributions in binary form must reproduce the above
-        copyright notice, this list of conditions and the following
-        disclaimer in the documentation and/or other materials
-        provided with the distribution.
-
-    This software is provided by the copyright holders and
-    contributors "as is" and any express or implied warranties,
-    including, but not limited to, the implied warranties of
-    merchantability and fitness for a particular purpose are
-    disclaimed. In no event shall the copyright owner or contributors
-    be liable for any direct, indirect, incidental, special,
-    exemplary, or consequential damages (including, but not limited
-    to, procurement of substitute goods or services; loss of use,
-    data, or profits; or business interruption) however caused and on
-    any theory of liability, whether in contract, strict liability, or
-    tort (including negligence or otherwise) arising in any way out of
-    the use of this software, even if advised of the possibility of
-    such damage.
-----------------------------------------------------------------------
-
 The included implementation of NumpyDocstring._parse_numpydoc_see_also_section
 was derived from code under the following license: