remove confusing warning for non existing RNTI

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c

@@ -2059,6 +2059,10 @@ static void nr_generate_Msg4(module_id_t module_idP,
 static void nr_check_Msg4_Ack(module_id_t module_id, int CC_id, frame_t frame, sub_frame_t slot, NR_RA_t *ra)
 {
   NR_UE_info_t *UE = find_nr_UE(&RC.nrmac[module_id]->UE_info, ra->rnti);
+  if (!UE) {
+    LOG_E(NR_MAC, "Cannot check Msg4 ACK/NACK, rnti %04x not in the table\n", ra->rnti);
+    return;
+  }
   const int current_harq_pid = ra->harq_pid;
 
   NR_UE_sched_ctrl_t *sched_ctrl = &UE->UE_sched_ctrl;

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c

@@ -1937,7 +1937,6 @@ NR_UE_info_t *find_nr_UE(NR_UEs_t *UEs, rnti_t rntiP)
       return UE;
     }
   }
-  LOG_W(NR_MAC,"Search for not existing rnti (ignore for RA): %04x\n", rntiP);
   return NULL;
 }