Move cc1plus from gcc to g++ package. Therefor, remove the duplicate
FILES entry from gcc package and keep the entry in g++ package.
(From OE-Core rev: f16c0efdeaca7cd08bd5609141b1094139e746f9)
Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>