Remove deprecated aggregator from the explorer list

Author: Alenar

mithril-explorer/aggregators-list.js

@@ -2,6 +2,5 @@ export default [
   "https://aggregator.release-preprod.api.mithril.network/aggregator",
   "https://aggregator.pre-release-preview.api.mithril.network/aggregator",
   "https://aggregator.testing-preview.api.mithril.network/aggregator",
-  "https://aggregator.api.mithril.network/aggregator",
   "http://localhost:8080/aggregator"
 ];