app/test: remove useless hexdump include
app/test: remove useless hexdump include

Cryptodev performance tests do not need to use any function
from rte_hexdump.h.

Fixes: 202d375c60bc1 ("app/test: add cryptodev unit and performance tests")

Signed-off-by: Pablo de Lara <28355d9cfe41bb8148aea0fb24f47aae8f4217a1@intel.com>
Acked-by: Fan Zhang <b46d470dc79aa6fd718cd24d07380f6203b7fc3c@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk