Merge remote-tracking branch 'origin/remove-usim-test' into integration_2025_w31 (!3536)

Remove --usim-test command line option

Remove the --usim-test option: to my knowledge, it's not used by users,
and is misleadingly placed in various places where there should not be a
difference w.r.t. USIM configuration.

When making the changes, I assumed that --usim-test would be 0 (the
default), which is the case in all executables when not specified in
options except for the nr_dlsim, nr_pbchsmi, nr_ulsim simulators.

The only exception is the initialization of PDCP from the MAC, which
does not seem to be correct (the PDCP is in the CU, so it does not make
sense to call it from the MAC which is in the DU).

openair1/SIMULATION/NR_PHY/dlsim.c

@@ -654,7 +654,6 @@ printf("%d\n", slot);
   InitSinLUT();
 
   get_softmodem_params()->phy_test = 1;
-  get_softmodem_params()->usim_test = 1;
   get_softmodem_params()->do_ra = 0;
   IS_SOFTMODEM_DLSIM = true;
 

openair1/SIMULATION/NR_PHY/pbchsim.c

@@ -154,7 +154,6 @@ int main(int argc, char **argv)
   int ssb_scan_threads = 0;
 
   channel_desc_t *gNB2UE;
-  get_softmodem_params()->usim_test = 1;
 
   //uint8_t extended_prefix_flag=0;
   //int8_t interf1=-21,interf2=-21;

openair1/SIMULATION/NR_PHY/ulsim.c

@@ -576,7 +576,6 @@ int main(int argc, char *argv[])
 
   get_softmodem_params()->phy_test = 1;
   get_softmodem_params()->do_ra = 0;
-  get_softmodem_params()->usim_test = 1;
 
   if (snr1set == 0)
     snr1 = snr0 + 10;