py/objmodule.h: Remove obsolete mp_builtin_module_weak_links_map decl.
py/objmodule.h: Remove obsolete mp_builtin_module_weak_links_map decl.

It was made obsolete in d2384efa809953152c57cbda4c339dfbaa64cf29

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython