:pencil2: Removed unnecessary async call

frontend/src/utils/survey.js

     constructor() {
         this.questionsFromDb = []
     }
-    async _addResponses(responseKeys, possibleResponsesByCategory) {
+    _addResponses(responseKeys, possibleResponsesByCategory) {
         const validFormInputs = {}
         Object.keys(possibleResponsesByCategory).forEach(categoryKey => {
             if (possibleResponsesByCategory[categoryKey].length) {