Remove a test file that does not pass

This test just does not work. I'm not sure how rc3 shipped with a broken test module.

Author: dflook

xtest/manifests/python3.14_test_manifest.yaml

@@ -1111,19 +1111,6 @@
     rename_globals: true
   status: passing
 /usr/local/lib/python3.14/test/test_bufio.py:
-- options: {}
-  status: passing
-- options:
-    remove_literal_statements: true
-  status: passing
-- options:
-    rename_globals: true
-  status: passing
-- options:
-    remove_literal_statements: true
-    rename_globals: true
-  status: passing
-/usr/local/lib/python3.14/test/test_build_details.py:
 - options: {}
   status: passing
 - options: