remove unused code

src/models/list.js

@@ -6,7 +6,6 @@ export default {
   state: {
     list: [],
     loading: false,
-    cursor: 0,
   },
 
   effects: {
@@ -40,11 +39,5 @@ export default {
         loading: action.payload,
       };
     },
-    updateCursor(state, action) {
-      return {
-        ...state,
-        loading: action.payload,
-      };
-    },
   },
 };