man/common/authorizations: remove incorrect HMAC info
man/common/authorizations: remove incorrect HMAC info

That section was 100% wrong, remove it.

Signed-off-by: William Roberts <60148e894dabf0b83bde1d460768794cd453c455@intel.com>

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