meta-phosphor: skeleton: obmc-libobmc-intf: drop preferred

Drop preferred version for obmc-libobmc-intf.

(From meta-phosphor rev: a95894d71eae0117bc6f910a35fc295e407207dd)

Change-Id: I41cbb4c74e9c93c8adb4148524f6d17ca493e2f7
Signed-off-by: Patrick Venture <venture@google.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/conf/distro/include/phosphor-defaults.inc b/meta-phosphor/conf/distro/include/phosphor-defaults.inc
index 56b0fea..ed2cd74 100644
--- a/meta-phosphor/conf/distro/include/phosphor-defaults.inc
+++ b/meta-phosphor/conf/distro/include/phosphor-defaults.inc
@@ -244,5 +244,3 @@
 # Will add a build dependency to host-ipmid on the
 # phosphor-ipmi-fru-whitelist-native recipe.
 VIRTUAL-RUNTIME_phosphor-ipmi-providers ?= "phosphor-ipmi-fru"
-
-PREFERRED_VERSION_obmc-libobmc-intf = "1.0"