tf_fuzz: remove duplicate crypto policy fields

Remove unused fields from policy_asset and key_asset that are duplicates
of information in the superclass, crypto_asset::policy.

Change-Id: I233b3ddedf87d0a2903e554121b91200fd1ec4ce
Signed-off-by: Nik Dewally <Nik.Dewally@arm.com>
2 files changed