Don't pass ATTEST_KEY for symmetric key generation

Bug: 379228013
Bug: 380375179
Test: VtsAidlKeyMintTargetTest
(cherry picked from https://android-review.googlesource.com/q/commit:6d825fb225f19353065e087dfe8688bc0e04f955)
Merged-In: I6b87a8997a3b9cf0f45f362ca91707546cc953d1
Change-Id: I6b87a8997a3b9cf0f45f362ca91707546cc953d1
1 file changed