Spur menu and reffer startup

main.c

@@ -2601,7 +2601,6 @@ int main(void)
 /* restore config */
   config_recall();
   if (caldata_recall(0) == -1) {
-    setting.refer = -1;
     load_default_properties();
   }
 /* restore frequencies and calibration 0 slot properties from flash memory */

sa_core.c

@@ -52,13 +52,11 @@ void reset_settings(int m)
   setting.linearity_step = 0;
   trace[TRACE_STORED].enabled = false;
   trace[TRACE_TEMP].enabled = false;
+  setting.refer = -1;
 #ifdef __SPUR__
   setting.spur = 0;
 #endif
   switch(m) {
-  case -1:
-    setting.refer = -1; // Clear cal signal when no autostart
-    break;
   case M_LOW:
     minFreq = 0;
     maxFreq = 520000000;

ui_sa.c

@@ -1342,9 +1342,6 @@ static const menuitem_t menu_display[] = {
   { MT_CALLBACK,1,          "CLEAR",            menu_storage_cb},
   { MT_CALLBACK,2,          "SUBTRACT",         menu_storage_cb},
   { MT_CALLBACK,3,          "WATERFALL",        menu_storage_cb},
-#ifdef __SPUR__
-  { MT_CALLBACK | MT_LOW,0, "\2SPUR\0REMOVAL", menu_spur_cb},
-#endif
   { MT_CANCEL, 0,           S_LARROW" BACK", NULL },
   { MT_NONE,   0, NULL, NULL } // sentinel
 };