Remove vestigial (unused) variable declaration.

src/common/slurm_protocol_api.h

@@ -59,14 +59,6 @@ enum controller_id {
 	SECONDARY_CONTROLLER = 2
 };
 
-/**********************************************************************\
-* configuration parameters
-\**********************************************************************/
-
-/* slurmctld_conf must be loaded with port numbers and controller names */
-extern slurm_ctl_conf_t slurmctld_conf;
-
-
 /**********************************************************************\
  * protocol configuration functions                
 \**********************************************************************/