remove reducer from index

src/reducers/index.js

@@ -9,14 +9,12 @@ import initialize from "./initialize";
 import cells from "./cells";
 import expression from "./expression";
 import controls from "./controls";
-import selectedMetadata from "./selectedMetadata";
 
 const Reducer = combineReducers({
   initialize,
   cells,
   expression,
   controls,
-  selectedMetadata,
 })
 
 let store = createStore(