ServicesList: Remove slowed timer blacklist from WhatsApp.

app/store/ServicesList.js

@@ -30,7 +30,6 @@ Ext.define('Rambox.store.ServicesList', {
 			,type: 'messaging'
 			,js_unread: `let checkUnread=()=>{const elements=document.querySelectorAll(".CxUIE, .unread");let count=0;for(let i of elements)0===i.querySelectorAll('*[data-icon="muted"]').length&&count++;rambox.updateBadge(count)};setInterval(checkUnread,1e3);let unregister_queue=[];navigator.serviceWorker.getRegistrations().then(registrations=>{for(const registration of registrations)unregister_queue.push(registration.unregister());return unregister_queue}).then(queue=>{}).catch(err=>{});`
 			,userAgent: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3445.2 Safari/537.36'
-			,slowed_timers: false
 		},
 		{
 			 id: 'slack'