[autotest] Remove site_rpc_interface

BUG=chromium:672727
TEST=Run unittests

Change-Id: I8535b121ba7f2317cccec981bf2a8a36ca2639cf
Reviewed-on: https://chromium-review.googlesource.com/435850
Commit-Ready: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
diff --git a/server/site_utils_unittest.py b/server/site_utils_unittest.py
index 6d7edf8..00b800e 100644
--- a/server/site_utils_unittest.py
+++ b/server/site_utils_unittest.py
@@ -6,7 +6,7 @@
 
 import common
 from autotest_lib.frontend import setup_django_lite_environment
-from autotest_lib.frontend.afe import site_rpc_interface
+from autotest_lib.frontend.afe import rpc_interface
 from autotest_lib.server import site_utils
 from autotest_lib.server.cros.dynamic_suite import tools
 
@@ -42,7 +42,7 @@
             else:
                 expected_info['build_version'] = build_parts[2]
             suite_job_name = ('%s-%s' %
-                    (build, site_rpc_interface.canonicalize_suite_name(suite)))
+                    (build, rpc_interface.canonicalize_suite_name(suite)))
             info = site_utils.parse_job_name(suite_job_name)
             self.assertEqual(info, expected_info, '%s failed to be parsed to '
                              '%s' % (suite_job_name, expected_info))