ref: reorganize store (based on different principles)

src/utils.ts

@@ -113,19 +113,6 @@ export function findInTree<T extends Tree<T>>(
   return null;
 }
 
-export function shallowEqual(objA, objB) {
-  if (objA === objB) {
-    return true;
-  }
-  const keysA = Object.keys(objA);
-  for (let key of keysA) {
-    if (!(key in objB) || objA[key] !== objB[key]) {
-      return false;
-    }
-  }
-  return true;
-}
-
 export function patch(C: any, patchName: string, patch: any) {
   const proto = C.prototype;
   if (!proto.__patches) {