[gimp] extensions: remove call to gettext.bind_textdomain_codeset().

[Jehan <jehanp src gnome org>]

commit c02b4836dd1798ab02f7701f8ee3f75731eb471f
Author: Jehan <jehan girinstud io>
Date:   Wed May 25 10:59:12 2022 +0200

    extensions: remove call to gettext.bind_textdomain_codeset().
    
    I added this call originally, mimicking the C plug-ins. Yet in Python,
    this function is deprecated since Python 3.8 and removed in 3.10.
    Looking closer in the docs, it looks like Python's gettext module works
    differently.
    
    While all the *gettext() functions return strings in the locale's
    encoding in C, unless overriden by bind_textdomain_codeset() (therefore
    we need this call, in order to have locale-independent string encoding),
    this is not the case in Python, whose gettext() call is already
    locale-independent. The gettext.bind_textdomain_codeset() function only
    applies to the specific l*gettext() functions which are deprecated too.
    
    Fixes the warning:
    
    > goat-exercise-py3.py:37: DeprecationWarning: bind_textdomain_codeset() is deprecated

 extensions/goat-exercises/goat-exercise-py3.py | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/extensions/goat-exercises/goat-exercise-py3.py b/extensions/goat-exercises/goat-exercise-py3.py
index 7b526920a5..da7c7e58b1 100755
--- a/extensions/goat-exercises/goat-exercise-py3.py
+++ b/extensions/goat-exercises/goat-exercise-py3.py
@@ -34,7 +34,6 @@ import sys
 # whereas the below calls are used for localization within the plug-in.
 textdomain = 'gimp30-std-plug-ins'
 gettext.bindtextdomain(textdomain, Gimp.locale_directory())
-gettext.bind_textdomain_codeset(textdomain, 'UTF-8')
 gettext.textdomain(textdomain)
 _ = gettext.gettext
 def N_(message): return message