[autotest] Remove unused parameter is_cloning

BUG=None
TEST=None

Change-Id: I3578fe0105b129bc02d5fdbada096270c0c9eb0e
Reviewed-on: https://chromium-review.googlesource.com/419691
Commit-Ready: Allen Li <ayatane@chromium.org>
Tested-by: Allen Li <ayatane@chromium.org>
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
diff --git a/frontend/afe/rpc_interface.py b/frontend/afe/rpc_interface.py
index c98c92e..14ffb68 100644
--- a/frontend/afe/rpc_interface.py
+++ b/frontend/afe/rpc_interface.py
@@ -964,7 +964,7 @@
                 builds=builds, test_source_build=test_source_build,
                 is_cloning=is_cloning, **kwargs)
     return create_job(name, priority, control_file, control_type, image=image,
-                      hostless=hostless, is_cloning=is_cloning, **kwargs)
+                      hostless=hostless, **kwargs)
 
 
 @rpc_utils.route_rpc_to_master
@@ -997,7 +997,6 @@
         run_reset=True,
         require_ssp=None,
         args=(),
-        is_cloning=False,
         **kwargs):
     """\
     Create and enqueue a job.
@@ -1041,7 +1040,6 @@
                        image is not set, drone will run the test without server-
                        side packaging. Default is None.
     @param args A list of args to be injected into control file.
-    @param is_cloning: True if creating a cloning job.
     @param kwargs extra keyword args. NOT USED.
 
     @returns The created Job id number.