[EXT] [PATCH] test/crypto: fix unnecessary stats retrieval

[Anoob Joseph]

> The device stats are retrieved in the testcase teardown function, but are not
> being used afterwards. Remove this unnecessary call.
> The stats retrieval for the device is being tested already by a dedicated stats
> testcase.
> 
> Fixes: 202d375c60bc ("app/test: add cryptodev unit and performance tests")
> Cc: declan.doherty at intel.com
> Cc: stable at dpdk.org
> 
> Signed-off-by: Ciara Power <ciara.power at intel.com>

Acked-by: Anoob Joseph <anoobj at marvell.com>