gerrit: rename deletedraft to delete

Gerrit has dropped "draft" from its name/concept, so update our API
to match.

BUG=None
TEST=`gerrit delete <CL>` works

Change-Id: Ida34eeac4f392847318ca8041dee5a59989552be
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/4436749
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Cindy Lin <xcl@google.com>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/gerrit.py b/scripts/gerrit.py
index 1e13140..8ed92be 100644
--- a/scripts/gerrit.py
+++ b/scripts/gerrit.py
@@ -948,15 +948,15 @@
         helper.SetHashtags(cl, add, remove, dryrun=opts.dryrun)
 
 
-class ActionDeletedraft(_ActionSimpleParallelCLs):
-    """Delete draft CLs"""
+class ActionDelete(_ActionSimpleParallelCLs):
+    """Delete CLs"""
 
-    COMMAND = "deletedraft"
+    COMMAND = "delete"
 
     @staticmethod
     def _process_one(helper, cl, opts):
         """Use |helper| to process the single |cl|."""
-        helper.DeleteDraft(cl, dryrun=opts.dryrun)
+        helper.Delete(cl, dryrun=opts.dryrun)
 
 
 class ActionReviewed(_ActionSimpleParallelCLs):