refactor: eliminate constants file of multiple currencies

store/const.js

@@ -1,10 +0,0 @@
-export const currencies = {
-  energy: 'energy',
-  seasons: 'seasons',
-  months: 'months',
-  days: 'days',
-  hours: 'hours',
-  seconds: 'seconds',
-  nanoseconds: 'nanoseconds',
-  plancktime: 'plancktime',
-}

store/index.js

@@ -1,5 +1,4 @@
 import Decimal from 'break_infinity.js'
-import { currencies } from './const.js'
 
 export const state = () => ({
   activeTabIndex: 0,