diff --git a/IPython/qt/kernel_mixins.py b/IPython/qt/kernel_mixins.py
index dd63baa..23d432b 100644
--- a/IPython/qt/kernel_mixins.py
+++ b/IPython/qt/kernel_mixins.py
@@ -17,10 +17,6 @@ class ChannelQObject(SuperQObject):
     # Emitted when the channel is stopped.
     stopped = QtCore.Signal()
 
-    #---------------------------------------------------------------------------
-    # Channel interface
-    #---------------------------------------------------------------------------
-
     def start(self):
         """ Reimplemented to emit signal.
         """
@@ -61,10 +57,6 @@ class QtShellChannelMixin(ChannelQObject):
     history_reply = QtCore.Signal(object)
     kernel_info_reply = QtCore.Signal(object)
 
-    #---------------------------------------------------------------------------
-    # 'ShellChannel' interface
-    #---------------------------------------------------------------------------
-
     def call_handlers(self, msg):
         """ Reimplemented to emit signals instead of making callbacks.
         """
@@ -108,10 +100,6 @@ class QtIOPubChannelMixin(ChannelQObject):
     # Emitted when a shutdown is noticed.
     shutdown_reply_received = QtCore.Signal(object)
 
-    #---------------------------------------------------------------------------
-    # 'IOPubChannel' interface
-    #---------------------------------------------------------------------------
-
     def call_handlers(self, msg):
         """ Reimplemented to emit signals instead of making callbacks.
         """
@@ -138,10 +126,6 @@ class QtStdInChannelMixin(ChannelQObject):
     # Emitted when an input request is received.
     input_requested = QtCore.Signal(object)
 
-    #---------------------------------------------------------------------------
-    # 'StdInChannel' interface
-    #---------------------------------------------------------------------------
-
     def call_handlers(self, msg):
         """ Reimplemented to emit signals instead of making callbacks.
         """
@@ -159,14 +143,9 @@ class QtHBChannelMixin(ChannelQObject):
     # Emitted when the kernel has died.
     kernel_died = QtCore.Signal(object)
 
-    #---------------------------------------------------------------------------
-    # 'HBChannel' interface
-    #---------------------------------------------------------------------------
-
     def call_handlers(self, since_last_heartbeat):
         """ Reimplemented to emit signals instead of making callbacks.
         """
-        # Emit the generic signal.
         self.kernel_died.emit(since_last_heartbeat)