You can't delete hardware. You can only delete software. You can remove hardware by physically taking it out of the computer.
However, what you want to do is disable the built in web cam driver.
To disable your integrated webcam, open your Device Manager.
Click on the Imaging devices
Right click on the Webcam device
Select Disable
Do NOT Uninstall
With Uninstall, Windows will just reinstall it during the next reboot.
To re-enable the webcam, repeat the above procedure,
but right click on the webcam device and select Enable.
This will return the webcam to its current state
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