meta-openpower: remove reference to MemoryBuffer

This is the only reference to MemoryBuffer in the entire organization
and doesn't seem to provide any value.  Remove it from the YAML so we
can also delete the interface from phosphor-dbus-interfaces.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I1a036e85f05a7f4b7dc5ce7b499c63794fc960b4
diff --git a/meta-openpower/recipes-phosphor/configuration/openpower-yaml-config/ipmi-hostboot-fru-mrw.yaml b/meta-openpower/recipes-phosphor/configuration/openpower-yaml-config/ipmi-hostboot-fru-mrw.yaml
index 3f6a739..cad598c 100644
--- a/meta-openpower/recipes-phosphor/configuration/openpower-yaml-config/ipmi-hostboot-fru-mrw.yaml
+++ b/meta-openpower/recipes-phosphor/configuration/openpower-yaml-config/ipmi-hostboot-fru-mrw.yaml
@@ -46,7 +46,6 @@
             PrettyName:
                 IPMIFruProperty: Name
                 IPMIFruSection: Board
-        xyz.openbmc_project.Inventory.Item.MemoryBuffer:
 NODE:
     AssociatedTypes:
     - SYS
diff --git a/meta-openpower/recipes-phosphor/ipmi/hostboot-inventory-config/config.yaml b/meta-openpower/recipes-phosphor/ipmi/hostboot-inventory-config/config.yaml
index 03ceec7..a73b520 100644
--- a/meta-openpower/recipes-phosphor/ipmi/hostboot-inventory-config/config.yaml
+++ b/meta-openpower/recipes-phosphor/ipmi/hostboot-inventory-config/config.yaml
@@ -114,7 +114,6 @@
       PrettyName:
         IPMIFruSection: Board
         IPMIFruProperty: "Name"
-    xyz.openbmc_project.Inventory.Item.MemoryBuffer:
 
 TPM:
   EntityID: 176