Bump HMI to v4.3dev4

hmi/dev/nspanel_us_land_code/home.txt

@@ -20,8 +20,6 @@ Page home
             {
                 vis bt_entities,0
             }
-            vis bt_notific,is_notification
-            vis bt_qrcode,is_qrcode
             vis bt_utilities,is_utilities
             if(display_mode==3)
             {
@@ -29,8 +27,6 @@ Page home
                 vis right_bt_text,0
             }
             vis unavailable,0
-        
-        Postinitialize Event
             sendme
         
 Variable (string) lastclick
@@ -355,7 +351,10 @@ Text bt_qrcode
     
     Events
         Touch Release Event
-            page qrcode
+            if(bt_qrcode.txt!="")
+            {
+                page qrcode
+            }
         
 Text bt_entities
     Attributes