test: Change the owner hierarchy auth back to an empty buffer
test: Change the owner hierarchy auth back to an empty buffer

Following tests using this hierarchy would have to use the same arbitrary auth otherwise.

Signed-off-by: Ricardo Schwarzmeier <6590d31da7eb603ef4ddc8227b304aca533a901a@infineon.com>

01org/TPM2.0-TSS,tpm2-software/tpm2-tss,01org/tpm2-tss,01org/TPM2.0-TSS,01org/TPM2.0-TSS,tpm2-software/tpm2-tss,01org/tpm2-tss,01org/tpm2-tss,01org/TPM2.0-TSS,tpm2-software/tpm2-tss