diff --git a/tests/utils.py b/tests/utils.py
index f5f56e5a79..977eeaf6ee 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -20,13 +20,12 @@ import os
 import time
 import uuid
 import warnings
-from inspect import getcallargs
 from typing import Type
 from urllib import parse as urlparse
 
 from mock import Mock, patch
 
-from twisted.internet import defer, reactor
+from twisted.internet import defer
 
 from synapse.api.constants import EventTypes
 from synapse.api.errors import CodeMessageException, cs_error
@@ -343,14 +342,6 @@ def setup_test_homeserver(
     return hs
 
 
-def get_mock_call_args(pattern_func, mock_func):
-    """ Return the arguments the mock function was called with interpreted
-    by the pattern functions argument list.
-    """
-    invoked_args, invoked_kargs = mock_func.call_args
-    return getcallargs(pattern_func, *invoked_args, **invoked_kargs)
-
-
 def mock_getRawHeaders(headers=None):
     headers = headers if headers is not None else {}
 
@@ -536,86 +527,6 @@ class MockClock:
         return d
 
 
-def _format_call(args, kwargs):
-    return ", ".join(
-        ["%r" % (a) for a in args] + ["%s=%r" % (k, v) for k, v in kwargs.items()]
-    )
-
-
-class DeferredMockCallable:
-    """A callable instance that stores a set of pending call expectations and
-    return values for them. It allows a unit test to assert that the given set
-    of function calls are eventually made, by awaiting on them to be called.
-    """
-
-    def __init__(self):
-        self.expectations = []
-        self.calls = []
-
-    def __call__(self, *args, **kwargs):
-        self.calls.append((args, kwargs))
-
-        if not self.expectations:
-            raise ValueError(
-                "%r has no pending calls to handle call(%s)"
-                % (self, _format_call(args, kwargs))
-            )
-
-        for (call, result, d) in self.expectations:
-            if args == call[1] and kwargs == call[2]:
-                d.callback(None)
-                return result
-
-        failure = AssertionError(
-            "Was not expecting call(%s)" % (_format_call(args, kwargs))
-        )
-
-        for _, _, d in self.expectations:
-            try:
-                d.errback(failure)
-            except Exception:
-                pass
-
-        raise failure
-
-    def expect_call_and_return(self, call, result):
-        self.expectations.append((call, result, defer.Deferred()))
-
-    @defer.inlineCallbacks
-    def await_calls(self, timeout=1000):
-        deferred = defer.DeferredList(
-            [d for _, _, d in self.expectations], fireOnOneErrback=True
-        )
-
-        timer = reactor.callLater(
-            timeout / 1000,
-            deferred.errback,
-            AssertionError(
-                "%d pending calls left: %s"
-                % (
-                    len([e for e in self.expectations if not e[2].called]),
-                    [e for e in self.expectations if not e[2].called],
-                )
-            ),
-        )
-
-        yield deferred
-
-        timer.cancel()
-
-        self.calls = []
-
-    def assert_had_no_calls(self):
-        if self.calls:
-            calls = self.calls
-            self.calls = []
-
-            raise AssertionError(
-                "Expected not to received any calls, got:\n"
-                + "\n".join(["call(%s)" % _format_call(c[0], c[1]) for c in calls])
-            )
-
-
 async def create_room(hs, room_id: str, creator_id: str):
     """Creates and persist a creation event for the given room
     """