Since gnomebase class already inherits autotools and pkgconfig,
there is no need to repeat it here.
(From OE-Core rev: 2eb7ba6cb68e171c880bcb1fc614f1ae6b300e4f)
Signed-off-by: Maxin B. John <maxin.john@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>