This test refers to a function that no longer exists after the eSDK
install double execution of bitbake has been removed, and since
test_prepare_unexpected is the only test in this module, drop the
entire module. We can easily resurrect it if we have unit tests to add
in the future.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
