remove trademarked USB superspeed logos from USB3 connectors

Created by: dlharmon

I don't believe the USB 3.0 A/B and USB C connector symbols are usable by anyone in the USA who is not a USB licensee due to a trademark. https://trademarks.justia.com/775/82/ss-77582723.html

All USB trademarks: https://trademarks.justia.com/owners/usb-implementers-forum-inc-2584569/

Example of modified symbol.

The USB trident does not appear to be trademarked, so I left it. They were not as aggressive with such things in the past.