auth_algo: Remove unused variables

Since the userName variable was declared in[1] and deprecated in[2],
this commit removes the deprecated variable.

[1]: https://gerrit.openbmc.org/c/openbmc/phosphor-net-ipmid/+/9643
[2]: https://gerrit.openbmc.org/c/openbmc/phosphor-net-ipmid/+/13094/7/command/rakp12.cpp#b66

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: Ia606607ae49e1f1923eae792a0f178fab52bbc3f
2 files changed