Revert "Keystore: Validate curve names in XDH and ED25519"

Revert submission 2517535-curve_25519_validation

Reason for revert: b/322323243

Reverted changes: /q/submissionid:2517535-curve_25519_validation

Change-Id: I75d731672140f827c4574ef1a23851522fa53e92
2 files changed