should correct issue with submodules not being correct

Author: kdschlosser

builder/__init__.py

@@ -319,8 +319,7 @@ def generate_manifest(
 
 def get_lvgl():
     cmd_ = [
-        ['git submodule update --init --depth=1 -- lib/lvgl'],
-        ['git -C lib/lvgl checkout -b release/v9.1']
+        'git submodule update --init --depth=1 -- lib/lvgl'
     ]
     print()
     print('collecting LVGL')
@@ -333,8 +332,7 @@ def get_lvgl():
 def get_micropython():
 
     cmd_ = [
-        ['git submodule updatem --init --depth=1 -- lib/micropython'],
-        ['git -C lib/micropython checkout v1.23.0']
+        'git submodule updatem --init --depth=1 -- lib/micropython',
     ]
     print()
     print('collecting MicroPython 1.23.0')