Remove Hindi and Dutch languages (#15703)

Signed-off-by: UltralyticsAssistant <web@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>

mkdocs.yml

@@ -174,10 +174,8 @@ nav:
           - 🇪🇸&nbsp Español: https://docs.ultralytics.com/es/
           - 🇵🇹&nbsp Português: https://docs.ultralytics.com/pt/
           - 🇮🇹&nbsp Italiano: https://docs.ultralytics.com/it/
-          - 🇳🇱&nbsp Nederlands: https://docs.ultralytics.com/nl/
           - 🇹🇷&nbsp Türkçe: https://docs.ultralytics.com/tr/
           - 🇻🇳&nbsp Tiếng Việt: https://docs.ultralytics.com/vi/
-          - 🇮🇳&nbsp हिन्दी: https://docs.ultralytics.com/hi/
           - 🇸🇦&nbsp العربية: https://docs.ultralytics.com/ar/
   - Quickstart:
       - quickstart.md
@@ -646,6 +644,8 @@ plugins:
   - mkdocs-jupyter
   - redirects:
       redirect_maps:
+        hi/index.md: index.md
+        nl/index.md: index.md
         callbacks.md: usage/callbacks.md
         cfg.md: usage/cfg.md
         cli.md: usage/cli.md