code_update_utils: Don't delete software object twice

There is no need to remove the software object twice, the backend
code has been fixed.

Change-Id: Id41aa5e5ad07688783a4779bb45c042b2fc521a2
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/lib/code_update_utils.robot b/lib/code_update_utils.robot
index 1207618..915e28d 100644
--- a/lib/code_update_utils.robot
+++ b/lib/code_update_utils.robot
@@ -353,8 +353,6 @@
 
     # Delete the image.
     Delete Software Object  ${software_object}
-    # TODO: If/when we don't have to delete twice anymore, take this out
-    Run Keyword And Ignore Error  Delete Software Object  ${software_object}
 
     # Verify that it's gone from software.
     ${software_objects}=  Get Software Objects  version_type=${version_type}