remove class structure for db api

squarenotsquare/src/realm/dbAPI.js

@@ -1,29 +1,17 @@
 import {systemRepo, userRepo, scoreRepo} from './dbInit';
 
-class realmAPI {
+export function getAllSystemValues() {
-  constructor(){
-    if (realmDB === null) {
-      realmDB = this;
-    }
-
-    return realmDB;
-  }
-
-  getAllSystemValues() {
   return systemRepo.getAllSystemValues();
 }
   
-  createSystemValue(key, value) {
+export function createSystemValue(key, value) {
   systemRepo.createSystemValue(key, value);
 }
 
-  deleteSystemValue(key) {
+export function deleteSystemValue(key) {
   systemRepo.deleteSystemValue(key);
 }
 
-  getSystemValue(key) {
+export function getSystemValue(key) {
   return systemRepo.getSystemKeyValue(key);
 }
-}
-
-export let realmDB = new realmAPI();