remove dead code from webcams view

Author: hawkrives

source/views/streaming/webcams/list.js

@@ -20,7 +20,6 @@ type Props = {}
 type State = {
 	webcams: Array<Webcam>,
 	loading: boolean,
-	refreshing: boolean,
 }
 
 export class WebcamsView extends React.PureComponent<Props, State> {
@@ -32,28 +31,12 @@ export class WebcamsView extends React.PureComponent<Props, State> {
 	state = {
 		webcams: defaultData.data,
 		loading: false,
-		refreshing: false,
 	}
 
 	componentDidMount() {
 		this.fetchData()
 	}
 
-	refresh = async () => {
-		const start = Date.now()
-		this.setState(() => ({refreshing: true}))
-
-		await this.fetchData()
-
-		// wait 0.5 seconds – if we let it go at normal speed, it feels broken.
-		const elapsed = Date.now() - start
-		if (elapsed < 500) {
-			await delay(500 - elapsed)
-		}
-
-		this.setState(() => ({refreshing: false}))
-	}
-
 	fetchData = async () => {
 		this.setState(() => ({loading: true}))