DROP SERVER
Name
DROP SERVER -- remove a foreign server descriptor
Synopsis
DROP SERVER [ IF EXISTS ] name [ CASCADE | RESTRICT ]
Description
Note: The following description applies only to Postgres-XC
   SERVER has not been supported
   by Postgres-XC yet.  This command may be supported
   in the future releases.
  
Compatibility
   DROP SERVER conforms to ISO/IEC 9075-9
   (SQL/MED).  The IF EXISTS clause is
   a PostgreSQL extension.