Bug 1370857 - Remove Marionette.clear_imported_scripts API; r=automatedtester

The import script functionality was removed in
https://bugzilla.mozilla.org/show_bug.cgi?id=1368648, but the
Marionette.clear_imported_script API was not removed from the client.

We are currently making calls after every test to the clearImportedScripts
command in the server, but we are apparently ignoring the ‘unknown
command’ error that is being returned.

MozReview-Commit-ID: KVjh2IfhuUY

--HG--
extra : rebase_source : ebc8faf8746e7e3e91b395ec488aeea014747848

testing/marionette/client/marionette_driver/marionette.py

@@ -1908,14 +1908,6 @@ class Marionette(object):
         body = {"script": js}
         self._send_message("importScript", body)
 
-    def clear_imported_scripts(self):
-        """Clears all imported scripts in this context, ie: calling
-        clear_imported_scripts in chrome context will clear only scripts
-        you imported in chrome, and will leave the scripts you imported
-        in content context.
-        """
-        self._send_message("clearImportedScripts")
-
     def add_cookie(self, cookie):
         """Adds a cookie to your current session.
 

testing/marionette/harness/marionette_harness/marionette_test/testcases.py

@@ -346,7 +346,6 @@ class MarionetteTestCase(CommonTestCase):
 
         if not self.marionette.crashed:
             try:
-                self.marionette.clear_imported_scripts()
                 self.marionette.execute_script("log('TEST-END: {0}')"
                                                .format(self.test_name),
                                                sandbox="simpletest")