ibm: remove setting root pw from local.conf

With meta-phosphor commit fd1f696f99 this is done by the distro
configuration; so, no need to do it in local.conf.

Change-Id: Ie164f43acf7c7eb3a14edf3a021d143dca769f45
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
4 files changed