Remove get_attr

This removes get_attr() as a library function (use get_attrs() instead)

libsaria/collection/library.py

@@ -61,10 +61,6 @@ def file_to_id(file):
 		return None
 	return res[0]
 
-def get_attr(id, attr):
-	print "Please don't use library.get_attr..."
-	return get_attrs(id, attr)[0]
-
 def get_attrs(id, *attrs):
 	res = []
 	rec = tracks.get(id, None)