I would suggest to either temp. recreating the CIFS Server with its old name  or open a Service Request to have EMC Support cleanup manually
I'm trying to delete shares created on a 5300 from an old cifs server that no longer exists.  When trying to delete from the GUI I get "no such file or directory" and message ID 13690601492.  Short of trying to recreate the old cifs server, are there any options for deleting these orphaned shares?
How to delete orphaned cifs shares