Remove redundant code to set root password

Background: The OpenBmc project default root account password is set
in meta-phosphor/conf/distro/include/phosphor-defaults.inc and can be
customized in each layer's local.conf file.

Many of these local.conf.sample files had redundant code to set the
password, which probably should not have been there.  Removing them
allows the defaults in phosphor-defaults.inc to take effect.

Tested: No.  Only meta-ibm was tested.

Signed-off-by: Joseph Reynolds <joseph-reynolds@charter.net>
Change-Id: I76dce00d269d7afa005d7bcfd63f846d3cf45596
diff --git a/meta-microsoft/meta-olympus/conf/local.conf.sample b/meta-microsoft/meta-olympus/conf/local.conf.sample
index ef46e0c..dc18dce 100755
--- a/meta-microsoft/meta-olympus/conf/local.conf.sample
+++ b/meta-microsoft/meta-olympus/conf/local.conf.sample
@@ -237,8 +237,4 @@
 CONF_VERSION = "1"
 
 # Set the root password to '0penBmc'
-INHERIT += "extrausers"
-
-EXTRA_USERS_PARAMS = " \
-  usermod -p '\$1\$UGMqyqdG\$FZiylVFmRRfl9Z0Ue8G7e/' root; \
-  "
+# Defaults from meta-phosphor/conf/distro/include/phosphor-defaults.inc