diff --git a/external_file_location/$ b/external_file_location/$
deleted file mode 100644
index 7243ff70..00000000
--- a/external_file_location/$
+++ /dev/null
@@ -1,61 +0,0 @@
-# -*- coding: utf-8 -*-
-###############################################################################
-#
-#   Copyright (C) 2015 Akretion (http://www.akretion.com).
-#   @author Valentin CHEMIERE <valentin.chemiere@akretion.com>
-#
-#   This program is free software: you can redistribute it and/or modify
-#   it under the terms of the GNU Affero General Public License as
-#   published by the Free Software Foundation, either version 3 of the
-#   License, or (at your option) any later version.
-#
-#   This program is distributed in the hope that it will be useful,
-#   but WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#   GNU Affero General Public License for more details.
-#
-#   You should have received a copy of the GNU Affero General Public License
-#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#
-###############################################################################
-
-import mock
-from contextlib import contextmanager
-
-class ConnMock(object):
-
-    def __init__(self, response):
-        import ipdb; ipdb.set_trace()
-        self.response = response
-
-    def isfile(self, path):
-        return self.response['isfile']
-
-    def makedir(self, path):
-        return self.response['makedir']
-
-    def exists(self, path):
-        return self.response['exists']
-
-    def open(self, path, mode):
-        return self.response['open']
-
-    def listdir(self, path):
-        return self.response['listdir']
-
-    def remove(self, path):
-        return self.response['remove']
-
-    def rename(self, source_path, target_path):
-        return self.response['rename']
-
-    def __call__(self, *args, **kwargs):
-        return self
-
-    def __exit__(self, *args, **kwargs):
-        pass
-
-@contextmanager
-def sftp_mock(response):
-    with mock.patch('fs.sftpfs.SFTPFS', ConnMock(response)) as SFTPFS:
-        yield