Remove confusing/outdated note about Github .isl editing.

CONTRIBUTING.md

@@ -54,8 +54,4 @@ https://git-scm.com/
 Contributing translations
 -------------------------
 
-To contribute translations please see https://jrsoftware.org/files/istrans/send.php.
-
-Please do NOT use GitHub's web editor to edit ANSI translations and create pull
-requests. This editor doesn't work since it automatically turns ANSI files into
-UTF8 files without a BOM which are not supported before Inno Setup 6.3.
+To contribute translations please see https://jrsoftware.org/files/istrans/send.php.