Remove CanBeBound & BindMeasurementJavaScript since they are not used.

tools/telemetry/telemetry/page/actions/page_action.py

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 from telemetry.page.actions import wait_until
 
 class PageActionNotSupported(Exception):
   pass
 
 class PageActionFailed(Exception):
   pass
@@ skipping 23 matching lines @@
     if self.wait_until:
       self.wait_until.RunActionAndWait(tab)
     else:
       self.RunAction(tab)
 
   def RunAction(self, tab):
     raise NotImplementedError()
 
   def CleanUp(self, tab):
     pass
-
-  def CanBeBound(self):
-    """If this class implements BindMeasurementJavaScript, override CanBeBound
-    to return True so that a test knows it can bind measurements."""
-    return False
-
-  def BindMeasurementJavaScript(
-      self, tab, start_js, stop_js):  # pylint: disable=W0613
-    """Let this action determine when measurements should start and stop.
-
-    A measurement can call this method to provide the action
-    with JavaScript code that starts and stops measurements. The action
-    determines when to execute the provided JavaScript code, for more accurate
-    timings.
-
-    Args:
-      tab: The tab to do everything on.
-      start_js: JavaScript code that starts measurements.
-      stop_js: JavaScript code that stops measurements.
-    """
-    raise Exception('This action cannot be bound.')