🔨 Build scripts cleanup (#27157)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

buildroot/share/PlatformIO/scripts/openblt.py

@@ -4,8 +4,7 @@
 import pioutil
 if pioutil.is_pio_build():
     from os.path import join
-
-    Import("env")
+    env = pioutil.env
 
     board = env.BoardConfig()
     board_keys = board.get("build").keys()