update stubs

Author: bobvan

stubs/micropython-v1_27_0_preview-frozen/zephyr/GENERIC/_boot.py

@@ -16,10 +16,6 @@
         "stubtype": "frozen"
     },
     "modules": [
-        {
-            "file": "_boot.py",
-            "module": "_boot"
-        },
         {
             "file": "upysh.py",
             "module": "upysh"