Update generalize.md

Fixes: https://github.com/MicrosoftDocs/azure-docs/issues/112925

Author: cynthn

articles/virtual-machines/generalize.md

@@ -108,19 +108,6 @@ To generalize your Windows VM, follow these steps:
 6. The VM will shut down when Sysprep is finished generalizing the VM. Do not restart the VM.
 
 
-
-> [!TIP]
-> **Optional** Use [DISM](/windows-hardware/manufacture/desktop/dism-optimize-image-command-line-options) to optimize your image and reduce your VM's first boot time.
->
-> To optimize your image, mount your VHD by double-clicking on it in Windows explorer, and then run DISM with the `/optimize-image` parameter.
->
-> ```cmd
-> DISM /image:D:\ /optimize-image /boot
-> ```
-> Where D: is the mounted VHD's path.
->
-> Running `DISM /optimize-image` should be the last modification you make to your VHD. If you make any changes to your VHD prior to deployment, you'll have to run `DISM /optimize-image` again.
-
 Once Sysprep has finished, set the status of the virtual machine to **Generalized**.
 
 ```azurepowershell-interactive