fix: remove common/utils.

.gitignore

@@ -1,2 +1,3 @@
 /data
-.env
+.env
+/node_modules

common/utils.js

@@ -1,34 +0,0 @@
-
-function roundTo(num, to = 2) {
-  return +(Math.round(num + "e+" + to)  + "e-" + to);
-}
-
-const flatToNestedArray = (
-  data,
-  config = { id: 'id', parentId: 'parent_id' }
-) => {
-  const map = {};
-  const nestedArray = [];
-
-  data.forEach((item) => {
-    map[item[config.id]] = { ...item };
-    map[item[config.id]].children = [];
-  });
-
-  data.forEach((item) => {
-    const parentItemId = item[config.parentId];
-
-    if (!item[config.parentId]) {
-      nestedArray.push(item);
-    }
-    if (parentItemId) {
-      map[parentItemId].children.push(item);
-    }
-  });
-  return nestedArray;
-};
-
-export default {
-  roundTo,
-  flatToNestedArray,
-};