remove renderBackground override

Author: Jab125

src/main/resources/assets/legacy_tweaks/ltguis/simplebackground.json5

@@ -6,13 +6,6 @@
         "action": "setScreen",
         "args": [":parent"]
       }
-    ],
-    "renderBackground": [
-      {
-        "type": "action",
-        "action": "renderPanorama",
-        "args": ["^0", 1]
-      }
     ]
   }
 }