fixed docstring sentence

Signed-off-by: Asfandyar Orakzai <asfandyar.orakzai@silabs.com>
diff --git a/scripts/generate_driver_wrappers.py b/scripts/generate_driver_wrappers.py
index babba5d..e0c4793 100755
--- a/scripts/generate_driver_wrappers.py
+++ b/scripts/generate_driver_wrappers.py
@@ -170,7 +170,6 @@
 def main() -> int:
     """
     Main with command line arguments.
-    returns 1 when read_driver_descriptions returns False
     """
     def_arg_mbedtls_root = build_tree.guess_mbedtls_root()