Get csppfetch from aitf.ancil.csppfetch

Slightly simplifies the import and testing.

example/aitf-data-for-run

@@ -23,10 +23,9 @@ import sys
 import logging
 import re
 
-sys.path.append(os.path.abspath('..'))
-import csppfetch
 import aitf.ancil
 import aitf.conlog
+csppfetch = aitf.ancil.csppfetch
 
 
 def parse_args():