Move respPuschAarx response queue to stack of nr_pusch_channel_estimation()

The queue for finished jobs of PUSCH channel estimation is only used inside
nr_pusch_channel_estimation(). Since initialization is fast, it can be
declared on the stack in the function where it is used.

openair1/SIMULATION/NR_PHY/ulsim.c

@@ -573,7 +573,6 @@ int main(int argc, char *argv[])
   initNotifiedFIFO(&gNB->respDecode);
 
   initNotifiedFIFO(&gNB->respPuschSymb);
-  initNotifiedFIFO(&gNB->respPuschAarx);
   initNotifiedFIFO(&gNB->L1_tx_free);
   initNotifiedFIFO(&gNB->L1_tx_filled);
   initNotifiedFIFO(&gNB->L1_tx_out);