The build process hard-codes searches of various directories in /usr when
looking for libraries, delete this to avoid host contamination.
(From OE-Core rev: 9febe2d184ef76b7cacace15cbe17968e8c37617)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
