fixup! Move blurb file utilities to blurb._blurb_file

Author: AA-Turner

src/blurb/_blurb_file.py

@@ -1,5 +1,3 @@
-from __future__ import annotations
-
 """
 
 The format of a blurb file:
@@ -79,6 +77,8 @@
 
 """
 
+from __future__ import annotations
+
 import os
 import re
 

tests/test_blurb.py

@@ -150,5 +150,3 @@ def test_glob_blurbs_sort_order(fs):
 
     # Assert
     assert filenames == expected
-
-