docs: trim top navbar -- drop License and CPython links

The version switcher plus the language switcher crowd the navbar. Drop the two
most niche top-level links: License (a legal page; lives in the footer) and
CPython (the CPython-vs-MicroPython difference tables; reference material). Both
remain reachable via the sidebar, search, and home page. Internals is kept.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: kwagyeman

docs/conf.py

@@ -557,10 +557,8 @@ def _render_landing_code(src):
         {"title": "Shields", "url": "openmvcam/shields"},
         {"title": "Sensors", "url": "openmvcam/sensors"},
         {"title": "Language", "url": "reference/index"},
-        {"title": "CPython", "url": "genrst/index"},
         {"title": "Internals", "url": "develop/index"},
         {"title": "Changelog", "url": "changelog/index"},
-        {"title": "License", "url": "license"},
     ],
 }