palmetto: drop meta-ibm from build default

Base hardware enablement support for meta-palmetto is provided by
meta-palmetto and meta-openpower.  meta-ibm adds advanced serviceability
functions for IBM branded products backed by the IBM service structure.

Palmetto is a reference platform for ODMs and/or OEMS building POWER8
based systems.  End users cannot purchase support contracts for Palmetto
systems.  As such remove meta-ibm from the build configuration in the
spirit of keeping the reference implementation mini and simplified.

At a functional level this removes the ibm-logging application from
images.

Note that meta-ibm can always be re-integrated by simply adding it to
bblayers.conf

(From meta-ibm rev: 37a17426e42ecfc843e757732b01a81212a109e7)

Change-Id: Ic0ea8778b249ae14f21093157793c046e2c1de81
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-ibm/meta-palmetto/conf/bblayers.conf.sample b/meta-ibm/meta-palmetto/conf/bblayers.conf.sample
index f58d39c..3470c2d 100644
--- a/meta-ibm/meta-palmetto/conf/bblayers.conf.sample
+++ b/meta-ibm/meta-palmetto/conf/bblayers.conf.sample
@@ -14,7 +14,6 @@
   ##OEROOT##/meta-phosphor \
   ##OEROOT##/meta-aspeed \
   ##OEROOT##/meta-openpower \
-  ##OEROOT##/meta-ibm \
   ##OEROOT##/meta-ibm/meta-palmetto \
   "
 BBLAYERS_NON_REMOVABLE ?= " \
@@ -26,6 +25,5 @@
   ##OEROOT##/meta-phosphor \
   ##OEROOT##/meta-aspeed \
   ##OEROOT##/meta-openpower \
-  ##OEROOT##/meta-ibm \
   ##OEROOT##/meta-ibm/meta-palmetto \
   "