scripts: Disabled local import hack on import

Moved local import hack behind if __name__ == "__main__"

These scripts aren't really intended to be used as python libraries.
Still, it's useful to import them for debugging and to get access to
their juicy internals.

scripts/parity.py

@@ -1,7 +1,8 @@
 #!/usr/bin/env python3
 
 # prevent local imports
-__import__('sys').path.pop(0)
+if __name__ == "__main__":
+    __import__('sys').path.pop(0)
 
 import io
 import os