libsaria: Remove more path code

libsaria/path/__init__.py

@@ -3,7 +3,6 @@
 import libsaria
 import os
 
-commonprefix = os.path.commonprefix
 exists   = os.path.exists
 is_dir   = os.path.isdir
 expand   = os.path.expanduser
@@ -21,7 +20,6 @@ stat     = os.stat
 cp         = None
 saria_dir  = None
 plugin_dir = None
-make_tree  = None
 
 shutil = None
 FSTree = None