Revert "usb: core: Track SuperSpeed Plus GenXxY"

This reverts commit 95b9f1e3 which is
commit 0299809b upstream.

It breaks the Android ABI and isn't needed at all, upstream added it to
reduce some fuzz on some later commits, so it can be safely dropped for
now.

Bug: 161946584
Change-Id: Ie87eebee9b355161465fbae86fc6c35825a46e44
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>