src/vs/workbench/contrib/remote/browser/remoteExplorer.ts/OnAutoForwardedAction/hide
class OnAutoForwardedAction:	public hide(removedPorts: number[]) {
		if (this.doActionTunnels) {
			this.doActionTunnels = this.doActionTunnels.filter(value => !removedPorts.includes(value.tunnelRemotePort));
		}
		if (this.lastShownPort && removedPorts.indexOf(this.lastShownPort) >= 0) {
			this.lastNotification?.close();
		}
	}