IBM1130, PDP10, PDP11: Replaced assert() with ASSURE() for run time error checks

Ibm1130/ibm1130_defs.h

@@ -16,7 +16,6 @@
 #include "sim_console.h"                    /* more SIMH defns (include path should include .., or make a copy) */
 
 #include <setjmp.h>
-#include <assert.h>
 #include <stdlib.h>
 
 #if defined(VMS)

Ibm1130/ibm1130_stddev.c

@@ -351,8 +351,6 @@ static t_stat tti_svc (UNIT *uptr)
                                                     /* otherwise, so ^E can interrupt the simulator, */
     sim_activate(&tti_unit, tti_unit.wait);         /* always continue polling keyboard */
 
-    assert(sim_clock_queue != QUEUE_LIST_END);
-
     temp = sim_poll_kbd();
 
     if (temp < SCPE_KFLAG)