diff --git a/lib/ansible/executor/task_queue_manager.py b/lib/ansible/executor/task_queue_manager.py
index 1b27a887d6..745889ac59 100644
--- a/lib/ansible/executor/task_queue_manager.py
+++ b/lib/ansible/executor/task_queue_manager.py
@@ -356,22 +356,7 @@ class TaskQueueManager:
 
             for method in methods:
                 try:
-                    # Previously, the `v2_playbook_on_start` callback API did not accept
-                    # any arguments. In recent versions of the v2 callback API, the play-
-                    # book that started execution is given. In order to support both of
-                    # these method signatures, we need to use this `inspect` hack to send
-                    # no arguments to the methods that don't accept them. This way, we can
-                    # not break backwards compatibility until that API is deprecated.
-                    # FIXME: target for removal and revert to the original code here after a year (2017-01-14)
-                    if method_name == 'v2_playbook_on_start':
-                        import inspect
-                        argspec = inspect.getargspec(method)
-                        if argspec.args == ['self']:
-                            method()
-                        else:
-                            method(*args, **kwargs)
-                    else:
-                        method(*args, **kwargs)
+                    method(*args, **kwargs)
                 except Exception as e:
                     # TODO: add config toggle to make this fatal or not?
                     display.warning(u"Failure using method (%s) in callback plugin (%s): %s" % (to_text(method_name), to_text(callback_plugin), to_text(e)))
diff --git a/test/units/executor/test_task_queue_manager_callbacks.py b/test/units/executor/test_task_queue_manager_callbacks.py
index bd92a69d77..b42f4d76b7 100644
--- a/test/units/executor/test_task_queue_manager_callbacks.py
+++ b/test/units/executor/test_task_queue_manager_callbacks.py
@@ -48,30 +48,6 @@ class TestTaskQueueManagerCallbacks(unittest.TestCase):
     def tearDown(self):
         pass
 
-    def test_task_queue_manager_callbacks_v2_playbook_on_start_legacy(self):
-        """
-        Assert that no exceptions are raised when sending a Playbook
-        start callback to a legacy callback module plugin.
-        """
-        register = self._register
-
-        class LegacyCallbackModule(CallbackBase):
-            """
-            This is a callback module with the legacy
-            method signature for `v2_playbook_on_start`.
-            """
-            CALLBACK_VERSION = 2.0
-            CALLBACK_TYPE = 'notification'
-            CALLBACK_NAME = 'legacy_module'
-
-            def v2_playbook_on_start(self):
-                register(self)
-
-        callback_module = LegacyCallbackModule()
-        self._tqm._callback_plugins.append(callback_module)
-        self._tqm.send_callback('v2_playbook_on_start', self._playbook)
-        register.assert_called_once_with(callback_module)
-
     def test_task_queue_manager_callbacks_v2_playbook_on_start(self):
         """
         Assert that no exceptions are raised when sending a Playbook