Allow only a single instance of the eNB agent

targets/SIMU/USER/oaisim.c

@@ -1337,9 +1337,9 @@ main (int argc, char **argv)
   smbv_write_config_from_frame_parms(smbv_fname, &PHY_vars_eNB_g[0][0]->lte_frame_parms);
 #endif
 
-#if defined (ENB_AGENT_SB_IF)
+  /* #if defined (ENB_AGENT_SB_IF)
   enb_agent_start();
-#endif 
+  #endif */ 
 
   // add events to future event list: Currently not used
   //oai_emulation.info.oeh_enabled = 1;