Bug 1162515: Remove FrameSendFailureError and FrameNotInitializedError

Removes FrameSendFailureError and FrameNotInitializedError from the
Marionette Python client.

r=davehunt

--HG--
extra : commitid : GUUlKplFtOH
extra : rebase_source : 8d4d135f8a0adee8491b0af2b8c65861adc712ca

testing/marionette/client/marionette/marionette_test.py

@@ -21,7 +21,7 @@ from marionette_driver.errors import (
         StaleElementException, ScriptTimeoutException, ElementNotVisibleException,
         NoSuchFrameException, InvalidElementStateException, NoAlertPresentException,
         InvalidCookieDomainException, UnableToSetCookieException, InvalidSelectorException,
-        MoveTargetOutOfBoundsException, FrameSendNotInitializedError, FrameSendFailureError
+        MoveTargetOutOfBoundsException
         )
 from marionette_driver.marionette import Marionette
 from marionette_driver.wait import Wait

testing/marionette/driver/marionette_driver/errors.py

@@ -150,16 +150,6 @@ class MoveTargetOutOfBoundsException(MarionetteException):
     status = "move target out of bounds"
 
 
-class FrameSendNotInitializedError(MarionetteException):
-    code = (54,)
-    status = "frame send not initialized"
-
-
-class FrameSendFailureError(MarionetteException):
-    code = (55,)
-    status = "frame send failure"
-
-
 class SessionNotCreatedException(MarionetteException):
     code = (33, 71)
     status = "session not created"