Revert "test: check old megalodon version"

This reverts commit 89eea5df52.

packages/megalodon/src/friendica/web_socket.ts

@@ -0,0 +1,18 @@
+import { WebSocketInterface } from '../megalodon'
+import { EventEmitter } from 'events'
+import { ProxyConfig } from '../proxy_config'
+
+export default class WebSocket extends EventEmitter implements WebSocketInterface {
+  constructor(
+    _url: string,
+    _stream: string,
+    _params: string | undefined,
+    _accessToken: string,
+    _userAgent: string,
+    _proxyConfig: ProxyConfig | false = false
+  ) {
+    super()
+  }
+  public start() {}
+  public stop() {}
+}