Back out "move PATH_MANAGER to OSS" (#1724)

Summary:
Pull Request resolved: #1724

Original commit changeset: c0046d62e641

Original Phabricator Diff: D39292896 (b932448)

torchtext can't depend on iopath as raised in pytorch/text#1905

Reviewed By: Nayef211

Differential Revision: D39639475

fbshipit-source-id: 69a48eb3820d0642b0a56712e160a0af589e4c7c

pytext/utils/file_io.py

@@ -9,7 +9,7 @@
 # the import everywhere in PyText
 # TODO: @stevenliu use PathManagerFactory after it's released to PyPI
 from iopath.common.file_io import HTTPURLHandler
-from torchtext.utils import PATH_MANAGER as PathManager  # noqa
+from pytorch.text.fb.utils import PATH_MANAGER as PathManager  # noqa
 
 
 def register_http_url_handler():