chore: remove vfkit (#206)

### What does this PR do?

Removes vfkit, functionality has been unused.

### Screenshot / video of UI

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screenshots or screencasts showing the difference -->

N/A

### What issues does this PR fix or reference?

<!-- Include any related issues from Podman Desktop
repository (or from another issue tracker). -->

N/A

### How to test this PR?

N/A

<!-- Please explain steps to reproduce -->

Signed-off-by: Charlie Drage <[email protected]>

packages/backend/src/extension.ts

@@ -18,7 +18,6 @@
 
 import type { ExtensionContext } from '@podman-desktop/api';
 import * as extensionApi from '@podman-desktop/api';
-import { launchVFKit } from './launch-vfkit';
 import { buildDiskImage } from './build-disk-image';
 import { History } from './history';
 import fs from 'node:fs';
@@ -34,9 +33,6 @@ export async function activate(extensionContext: ExtensionContext): Promise<void
   await history.loadFile();
 
   extensionContext.subscriptions.push(
-    extensionApi.commands.registerCommand('bootc.vfkit', async container => {
-      await launchVFKit(container);
-    }),
     extensionApi.commands.registerCommand('bootc.image.build', async image => {
       const selections = await bootcBuildOptionSelection(history);
       if (selections) {