fix compilation of telnetsrv_proccmd.c with deadline scheduler disabled

common/utils/telnetsrv/telnetsrv_proccmd.c

@@ -121,9 +121,11 @@ char toksep[2];
               case SCHED_RR:
                    lptr+=sprintf(lptr,"%s ","rt: rr");
               break;
+#ifdef SCHED_DEADLINE
               case SCHED_DEADLINE:
                    lptr+=sprintf(lptr,"%s ","rt: deadline");
               break;
+#endif
               default:
                    lptr+=sprintf(lptr,"%s ","????");
               break;