MAINTAINERS: drop invalid usb/cdns3 Reviewer e-mail

Alternate working e-mail of this Reviewer not available
so drop it do prevent unnecessary bounce backs.

Signed-off-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20230712122828.17793-1-rogerq@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>