### By default, no, there's no shortcut.

You can create one yourself though:

1. Open **System Preferences** → **Keyboard** → **Shortcuts** → **App Shortcuts**.

2. Click the **+** button to add a new shortcut.

3. Set the **Application** to **Numbers.app**, and the **Menu Title** to **Delete Row**.

   <img src="https://i.sstatic.net/eoetv.png" width="400">

4. Set your keyboard shortcut and press **Add**.