test: remove redundant macro

Remove RTE_TEST_TRACE_FAILURE macro definition from app/test/test.h
as it might be already defined and cause build problems.

Also it is good to leave the decision of additional logs to the final
user of test.h and rte_test.h

Fixes: 5afc521eac6a ("eal: add test assert macros")
Cc: stable@dpdk.org
Signed-off-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>