some initial API refactoring

src/services/timeline_fetcher/timeline_fetcher.service.js

@@ -1,6 +1,6 @@
 import { camelCase } from 'lodash'
 
-import apiService from '../api/api.service.js'
+import { fetchTimeline } from '../api/api.service.js'
 import { promiseInterval } from '../promise_interval/promise_interval.js'
 
 import { useInstanceStore } from 'src/stores/instance.js'
@@ -75,8 +75,7 @@ const fetchAndUpdate = ({
 
   const numStatusesBeforeFetch = timelineData.statuses.length
 
-  return apiService
-    .fetchTimeline(args)
+  return fetchTimeline(args)
     .then((response) => {
       if (response.errors) {
         if (timeline === 'favorites') {