openbmc-machines: Remove unncessary CONFIG_HWMON

CONFIG_HWMON is implied by the drivers that use it, so we do not need to
specify it in the defconfigs.

Change-Id: I1c6e8679412f80dc0db69ef0f72a9c73e8602fb9
Signed-off-by: Joel Stanley <joel@jms.id.au>
3 files changed