py: Remove obsolete declarations; make mp_obj_get_array consistent.
diff --git a/py/builtinimport.c b/py/builtinimport.c
index 2b9b3a3..d4d56b5 100644
--- a/py/builtinimport.c
+++ b/py/builtinimport.c
@@ -128,7 +128,7 @@
     rt_globals_set(old_globals);
 }
 
-mp_obj_t mp_builtin___import__(int n_args, mp_obj_t *args) {
+mp_obj_t mp_builtin___import__(uint n_args, mp_obj_t *args) {
     /*
     printf("import:\n");
     for (int i = 0; i < n_args; i++) {