De-activate ADAM PGPLOT after use by an application.

CALL PGP_DEACT ( STATUS )

STATUS = INTEGER (Given and returned)

On entry, the STATUS variable holds the global status value. If the given value of STATUS is SAI__OK and the routine fails to complete, STATUS will be set to an appropriate error number. If the given value of STATUS is not SAI__OK, then the routine will still attempt to execute and will return with STATUS unchanged.