Build: Disable TEST_S_ATTESTATION for corstone1000

The new changes increased the RAM usage and running the
attestation test is not possible with the other tests.

Signed-off-by: Bence Balogh <bence.balogh@arm.com>
Change-Id: Ia9427971b31e64ff77c8787492774dff36b5c100
1 file changed