Clean up radar_screen.py by removing imports

Removed unused imports and sys.path modification.

Author: MatteoCnda1

lib/vl53l1x/examples/radar_screen.py

@@ -5,12 +5,8 @@
 Adapted for a round display bezel using steami_screen widgets.
 """
 
-import sys
-
 import micropython
 
-sys.path.insert(0, "/remote")
-
 from time import sleep_ms
 
 import ssd1327