tools: remove unused variable in configure.py

PR-URL: https://github.com/nodejs/node/pull/36525
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

configure.py

@@ -1547,8 +1547,6 @@ def configure_intl(o):
     'variables': {}
   }
   icu_config_name = 'icu_config.gypi'
-  def write_config(data, name):
-    return
 
   # write an empty file to start with
   write(icu_config_name, do_not_edit +