meta-ibm: p10bmc: remove explicit 'mctp' DISTRO_FEATURE

The 'mctp' distro feature (and df-mctp override flag) is now
enabled as a side-effect of openpower-hostfw-over-pldm.inc.
Remove the explicit feature flag enablement to clean up.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia34e1d045d048e5953d0e991fe070ab0aaad37ba
diff --git a/meta-ibm/conf/machine/p10bmc.conf b/meta-ibm/conf/machine/p10bmc.conf
index db60b24..f11657b 100644
--- a/meta-ibm/conf/machine/p10bmc.conf
+++ b/meta-ibm/conf/machine/p10bmc.conf
@@ -25,7 +25,7 @@
 require conf/distro/include/ibm-mpreboot.inc
 require conf/distro/include/ibm-yaml.inc
 include conf/distro/include/extra-dev-debug-tools.inc
-DISTRO_FEATURES += "ibm-service-account-policy mctp"
+DISTRO_FEATURES += "ibm-service-account-policy"
 MACHINE_FEATURES += 'phal tpm2'
 
 SERIAL_CONSOLES = "115200;ttyS4"