fix(machinery): update DeepL languages mapping

They now support more target languages, so remove mappings which are no
longer needed.

Author: nijel

docs/changes.rst

@@ -18,6 +18,8 @@ Weblate 5.15
 
 .. rubric:: Bug fixes
 
+* :ref:`mt-deepl` integration now correctly handles translating to Chinese variants.
+
 .. rubric:: Compatibility
 
 * Replaced custom ``RequireLoginMiddleware`` with Django 5.1's ``LoginRequiredMiddleware``. This makes settings ``LOGIN_REQUIRED_URLS`` and ``LOGIN_REQUIRED_URLS_EXCEPTIONS`` no longer supported, including their Docker environment variable counterparts.

weblate/machinery/deepl.py

@@ -40,9 +40,6 @@ class DeepLTranslation(
     # better than other ones.
     max_score = 91
     language_map: ClassVar[dict[str, str]] = {
-        "zh_Hans": "zh",
-        "zh_Hant": "",  # Traditional Chinese not supported but would map to zh
-        "pt": "pt-pt",
         "pt@formal": "pt-pt@formal",
         "pt@informal": "pt-pt@informal",
     }