diff --git a/IPython/core/events.py b/IPython/core/events.py
index dcdc669..798ef01 100644
--- a/IPython/core/events.py
+++ b/IPython/core/events.py
@@ -63,14 +63,6 @@ class EventManager(object):
         """Remove a callback from the given event."""
         self.callbacks[event].remove(function)
     
-    def reset(self, event):
-        """Clear all callbacks for the given event."""
-        self.callbacks[event] = []
-    
-    def reset_all(self):
-        """Clear all callbacks for all events."""
-        self.callbacks = {n:[] for n in self.callbacks}
-    
     def trigger(self, event, *args, **kwargs):
         """Call callbacks for ``event``.
         
diff --git a/IPython/core/tests/test_events.py b/IPython/core/tests/test_events.py
index e265999..8e8402c 100644
--- a/IPython/core/tests/test_events.py
+++ b/IPython/core/tests/test_events.py
@@ -25,22 +25,8 @@ class CallbackTests(unittest.TestCase):
         self.em.trigger('ping_received')
         self.assertEqual(cb.call_count, 1)
     
-    def test_reset(self):
-        cb = Mock()
-        self.em.register('ping_received', cb)
-        self.em.reset('ping_received')
-        self.em.trigger('ping_received')
-        assert not cb.called
-    
-    def test_reset_all(self):
-        cb = Mock()
-        self.em.register('ping_received', cb)
-        self.em.reset_all()
-        self.em.trigger('ping_received')
-        assert not cb.called
-    
     def test_cb_error(self):
         cb = Mock(side_effect=ValueError)
         self.em.register('ping_received', cb)
         with tt.AssertPrints("Error in callback"):
-            self.em.trigger('ping_received')
\ No newline at end of file
+            self.em.trigger('ping_received')
diff --git a/IPython/core/tests/test_interactiveshell.py b/IPython/core/tests/test_interactiveshell.py
index 4d95a68..b9e76c2 100644
--- a/IPython/core/tests/test_interactiveshell.py
+++ b/IPython/core/tests/test_interactiveshell.py
@@ -301,7 +301,10 @@ class InteractiveShellTestCase(unittest.TestCase):
             assert post_explicit.called
         finally:
             # remove post-exec
-            ip.events.reset_all()
+            ip.events.unregister('pre_run_cell', pre_explicit)
+            ip.events.unregister('pre_execute', pre_always)
+            ip.events.unregister('post_run_cell', post_explicit)
+            ip.events.unregister('post_execute', post_always)
     
     def test_silent_noadvance(self):
         """run_cell(silent=True) doesn't advance execution_count"""