test(realm): fix realm_printf string

Remove extra Realm: string from realm printf
correct the print format

Change-Id: I1916cf5bda23aab2cdee59457872353c108148c7
Signed-off-by: Shruti Gupta <shruti.gupta@arm.com>
diff --git a/realm/realm_multiple_rec.c b/realm/realm_multiple_rec.c
index bc357bc..abd166b 100644
--- a/realm/realm_multiple_rec.c
+++ b/realm/realm_multiple_rec.c
@@ -25,10 +25,10 @@
 
 static void rec1_handler(u_register_t cxt_id)
 {
-	realm_printf("Realm: running on CPU = 0x%lx cxt_id= 0x%lx\n",
+	realm_printf("running on CPU = 0x%lx cxt_id= 0x%lx\n",
 			read_mpidr_el1() & MPID_MASK, cxt_id);
 	if (cxt_id < CXT_ID_MAGIC || cxt_id > CXT_ID_MAGIC + MAX_REC_COUNT) {
-		realm_printf("Realm: Wrong cxt_id\n");
+		realm_printf("Wrong cxt_id\n");
 		rsi_exit_to_host(HOST_CALL_EXIT_FAILED_CMD);
 	}
 	is_secondary_cpu_booted++;