Just like libsdl, we can rip out the sdl2-config script from the sysroot as
pkg-config is preferrable.
(From OE-Core rev: 8d93fc236a72cb1bb0e713c4fc5b73e65ede6f53)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>