lib/tpm2_util.h: drop duplicate fn protoype
lib/tpm2_util.h: drop duplicate fn protoype

01org/tpm2.0-tools,martinezjavier/tpm2-tools,martinezjavier/tpm2-tools,01org/tpm2.0-tools,martinezjavier/tpm2-tools,martinezjavier/tpm2-tools,01org/tpm2.0-tools