tunnels: fix redundant quick pick group name (microsoft#189198)

Fixes microsoft#188825

Author: connor4312

src/vs/workbench/contrib/remoteTunnel/electron-sandbox/remoteTunnel.contribution.ts

@@ -397,11 +397,11 @@ export class RemoteTunnelWorkbenchContribution extends Disposable implements IWo
 	private async createQuickpickItems(sessions: ExistingSessionItem[]): Promise<(ExistingSessionItem | AuthenticationProviderOption | IQuickPickSeparator | IQuickPickItem & { canceledAuthentication: boolean })[]> {
 		const options: (ExistingSessionItem | AuthenticationProviderOption | IQuickPickSeparator | IQuickPickItem & { canceledAuthentication: boolean })[] = [];
 
-		options.push({ type: 'separator', label: localize('signed in', "Signed In") });
-
-		options.push(...sessions);
-
-		options.push({ type: 'separator', label: localize('others', "Others") });
+		if (sessions.length) {
+			options.push({ type: 'separator', label: localize('signed in', "Signed In") });
+			options.push(...sessions);
+			options.push({ type: 'separator', label: localize('others', "Others") });
+		}
 
 		for (const authenticationProvider of (await this.getAuthenticationProviders())) {
 			const signedInForProvider = sessions.some(account => account.providerId === authenticationProvider.id);