minor: remove a LOG_E that should not be here anymore

When running the softmodem, we get the error:

    fill_ulsch UE_id 0 nb_rb = 0

The code has changed some time ago and this log was left but is not
meaningful anymore.

openair1/PHY/LTE_TRANSPORT/dci_tools.c

@@ -2006,11 +2006,6 @@ void fill_ulsch(PHY_VARS_eNB *eNB,int UE_id,nfapi_ul_config_ulsch_pdu *ulsch_pdu
 	  return;
   }
 
-  //AssertFatal(ulsch->harq_processes[harq_pid]->nb_rb>0,"nb_rb = 0\n");
-  if(ulsch->harq_processes[harq_pid]->nb_rb == 0) {
-    LOG_E(PHY, "fill_ulsch UE_id %d nb_rb = 0\n", UE_id);
-  }
-
   ulsch->harq_processes[harq_pid]->frame                                 = frame;
   ulsch->harq_processes[harq_pid]->subframe                              = subframe;
   ulsch->harq_processes[harq_pid]->handled                               = 0;