Fix regression due to 'mock' import

Fix #298

Author: nicoddemus

CHANGELOG.rst

@@ -1,6 +1,12 @@
 Releases
 ========
 
+3.8.1 (2022-06-24)
+------------------
+
+* Fix regression caused by an explicit ``mock`` dependency in the code (`#298`_).
+
+.. _#298: https://github.com/pytest-dev/pytest-mock/issues/298
 
 3.8.0 (2022-06-24)
 ------------------

src/pytest_mock/plugin.py

@@ -30,8 +30,7 @@
 if sys.version_info[:2] > (3, 7):
     AsyncMockType = unittest.mock.AsyncMock
 else:
-    import mock
-    AsyncMockType = mock.AsyncMock
+    AsyncMockType = Any
 
 
 class PytestMockWarning(UserWarning):