diff --git a/src/python/grpcio/grpc/_cython/adapter_low.py b/src/python/grpcio/grpc/_cython/adapter_low.py
deleted file mode 100644
index 03a1e56..0000000
--- a/src/python/grpcio/grpc/_cython/adapter_low.py
+++ /dev/null
@@ -1,102 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
-# Adapter from grpc._cython.types to the surface expected by
-# grpc._adapter._intermediary_low.
-#
-# TODO(atash): Once this is plugged into grpc._adapter._intermediary_low, remove
-# both grpc._adapter._intermediary_low and this file. The fore and rear links in
-# grpc._adapter should be able to use grpc._cython.cygrpc directly.
-
-from grpc._adapter import _types as type_interfaces
-from grpc._cython import cygrpc
-
-
-class ClientCredentials(object):
-  def __init__(self):
-    raise NotImplementedError()
-
-  @staticmethod
-  def google_default():
-    raise NotImplementedError()
-
-  @staticmethod
-  def ssl():
-    raise NotImplementedError()
-
-  @staticmethod
-  def composite():
-    raise NotImplementedError()
-
-  @staticmethod
-  def compute_engine():
-    raise NotImplementedError()
-
-  @staticmethod
-  def jwt():
-    raise NotImplementedError()
-
-  @staticmethod
-  def refresh_token():
-    raise NotImplementedError()
-
-  @staticmethod
-  def iam():
-    raise NotImplementedError()
-
-
-class ServerCredentials(object):
-  def __init__(self):
-    raise NotImplementedError()
-
-  @staticmethod
-  def ssl():
-    raise NotImplementedError()
-
-
-class CompletionQueue(type_interfaces.CompletionQueue):
-  def __init__(self):
-    raise NotImplementedError()
-
-
-class Call(type_interfaces.Call):
-  def __init__(self):
-    raise NotImplementedError()
-
-
-class Channel(type_interfaces.Channel):
-  def __init__(self):
-    raise NotImplementedError()
-
-
-class Server(type_interfaces.Server):
-  def __init__(self):
-    raise NotImplementedError()
-
diff --git a/src/python/grpcio/tests/unit/_cython/adapter_low_test.py b/src/python/grpcio/tests/unit/_cython/adapter_low_test.py
deleted file mode 100644
index f1bec23..0000000
--- a/src/python/grpcio/tests/unit/_cython/adapter_low_test.py
+++ /dev/null
@@ -1,187 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# Fork of grpc._adapter._low_test; the grpc._cython.types adapter in
-# grpc._cython.low should transparently support the semantics expected of
-# grpc._adapter._low.
-
-import time
-import unittest
-
-from grpc._adapter import _types
-from grpc._cython import adapter_low as _low
-
-
-class InsecureServerInsecureClient(unittest.TestCase):
-
-  def setUp(self):
-    self.server_completion_queue = _low.CompletionQueue()
-    self.server = _low.Server(self.server_completion_queue, [])
-    self.port = self.server.add_http2_port('[::]:0')
-    self.client_completion_queue = _low.CompletionQueue()
-    self.client_channel = _low.Channel('localhost:%d'%self.port, [])
-
-    self.server.start()
-
-  def tearDown(self):
-    self.server.shutdown()
-    del self.client_channel
-
-    self.client_completion_queue.shutdown()
-    while (self.client_completion_queue.next().type !=
-               _types.EventType.QUEUE_SHUTDOWN):
-      pass
-    self.server_completion_queue.shutdown()
-    while (self.server_completion_queue.next().type !=
-               _types.EventType.QUEUE_SHUTDOWN):
-      pass
-
-    del self.client_completion_queue
-    del self.server_completion_queue
-    del self.server
-
-  @unittest.skip('TODO(atash): implement grpc._cython.adapter_low')
-  def testEcho(self):
-    DEADLINE = time.time()+5
-    DEADLINE_TOLERANCE = 0.25
-    CLIENT_METADATA_ASCII_KEY = 'key'
-    CLIENT_METADATA_ASCII_VALUE = 'val'
-    CLIENT_METADATA_BIN_KEY = 'key-bin'
-    CLIENT_METADATA_BIN_VALUE = b'\0'*1000
-    SERVER_INITIAL_METADATA_KEY = 'init_me_me_me'
-    SERVER_INITIAL_METADATA_VALUE = 'whodawha?'
-    SERVER_TRAILING_METADATA_KEY = 'california_is_in_a_drought'
-    SERVER_TRAILING_METADATA_VALUE = 'zomg it is'
-    SERVER_STATUS_CODE = _types.StatusCode.OK
-    SERVER_STATUS_DETAILS = 'our work is never over'
-    REQUEST = 'in death a member of project mayhem has a name'
-    RESPONSE = 'his name is robert paulson'
-    METHOD = 'twinkies'
-    HOST = 'hostess'
-    server_request_tag = object()
-    request_call_result = self.server.request_call(self.server_completion_queue,
-                                                   server_request_tag)
-
-    self.assertEqual(_types.CallError.OK, request_call_result)
-
-    client_call_tag = object()
-    client_call = self.client_channel.create_call(self.client_completion_queue,
-                                                  METHOD, HOST, DEADLINE)
-    client_initial_metadata = [
-        (CLIENT_METADATA_ASCII_KEY, CLIENT_METADATA_ASCII_VALUE),
-        (CLIENT_METADATA_BIN_KEY, CLIENT_METADATA_BIN_VALUE)]
-    client_start_batch_result = client_call.start_batch([
-        _types.OpArgs.send_initial_metadata(client_initial_metadata),
-        _types.OpArgs.send_message(REQUEST),
-        _types.OpArgs.send_close_from_client(),
-        _types.OpArgs.recv_initial_metadata(),
-        _types.OpArgs.recv_message(),
-        _types.OpArgs.recv_status_on_client()
-    ], client_call_tag)
-    self.assertEqual(_types.CallError.OK, client_start_batch_result)
-
-    request_event = self.server_completion_queue.next(DEADLINE)
-    self.assertEqual(_types.EventType.OP_COMPLETE, request_event.type)
-    self.assertIsInstance(request_event.call, _low.Call)
-    self.assertIs(server_request_tag, request_event.tag)
-    self.assertEqual(1, len(request_event.results))
-    self.assertEqual(dict(client_initial_metadata),
-                      dict(request_event.results[0].initial_metadata))
-    self.assertEqual(METHOD, request_event.call_details.method)
-    self.assertEqual(HOST, request_event.call_details.host)
-    self.assertLess(abs(DEADLINE - request_event.call_details.deadline),
-                    DEADLINE_TOLERANCE)
-
-    server_call_tag = object()
-    server_call = request_event.call
-    server_initial_metadata = [
-        (SERVER_INITIAL_METADATA_KEY, SERVER_INITIAL_METADATA_VALUE)]
-    server_trailing_metadata = [
-        (SERVER_TRAILING_METADATA_KEY, SERVER_TRAILING_METADATA_VALUE)]
-    server_start_batch_result = server_call.start_batch([
-        _types.OpArgs.send_initial_metadata(server_initial_metadata),
-        _types.OpArgs.recv_message(),
-        _types.OpArgs.send_message(RESPONSE),
-        _types.OpArgs.recv_close_on_server(),
-        _types.OpArgs.send_status_from_server(
-            server_trailing_metadata, SERVER_STATUS_CODE, SERVER_STATUS_DETAILS)
-    ], server_call_tag)
-    self.assertEqual(_types.CallError.OK, server_start_batch_result)
-
-    client_event = self.client_completion_queue.next(DEADLINE)
-    server_event = self.server_completion_queue.next(DEADLINE)
-
-    self.assertEqual(6, len(client_event.results))
-    found_client_op_types = set()
-    for client_result in client_event.results:
-      # we expect each op type to be unique
-      self.assertNotIn(client_result.type, found_client_op_types)
-      found_client_op_types.add(client_result.type)
-      if client_result.type == _types.OpType.RECV_INITIAL_METADATA:
-        self.assertEqual(dict(server_initial_metadata),
-                          dict(client_result.initial_metadata))
-      elif client_result.type == _types.OpType.RECV_MESSAGE:
-        self.assertEqual(RESPONSE, client_result.message)
-      elif client_result.type == _types.OpType.RECV_STATUS_ON_CLIENT:
-        self.assertEqual(dict(server_trailing_metadata),
-                          dict(client_result.trailing_metadata))
-        self.assertEqual(SERVER_STATUS_DETAILS, client_result.status.details)
-        self.assertEqual(SERVER_STATUS_CODE, client_result.status.code)
-    self.assertEqual(set([
-          _types.OpType.SEND_INITIAL_METADATA,
-          _types.OpType.SEND_MESSAGE,
-          _types.OpType.SEND_CLOSE_FROM_CLIENT,
-          _types.OpType.RECV_INITIAL_METADATA,
-          _types.OpType.RECV_MESSAGE,
-          _types.OpType.RECV_STATUS_ON_CLIENT
-      ]), found_client_op_types)
-
-    self.assertEqual(5, len(server_event.results))
-    found_server_op_types = set()
-    for server_result in server_event.results:
-      self.assertNotIn(client_result.type, found_server_op_types)
-      found_server_op_types.add(server_result.type)
-      if server_result.type == _types.OpType.RECV_MESSAGE:
-        self.assertEqual(REQUEST, server_result.message)
-      elif server_result.type == _types.OpType.RECV_CLOSE_ON_SERVER:
-        self.assertFalse(server_result.cancelled)
-    self.assertEqual(set([
-          _types.OpType.SEND_INITIAL_METADATA,
-          _types.OpType.RECV_MESSAGE,
-          _types.OpType.SEND_MESSAGE,
-          _types.OpType.RECV_CLOSE_ON_SERVER,
-          _types.OpType.SEND_STATUS_FROM_SERVER
-      ]), found_server_op_types)
-
-    del client_call
-    del server_call
-
-
-if __name__ == '__main__':
-  unittest.main(verbosity=2)