Remove largely unmaintained Mihawk

A fork of it is maintained but its upstream layer has largely been
unmaintained.
No future products are planned to be based on this layer.
Mihawk is similar to Witherspoon.

Signed-off-by: Myung Bae <myungbae@us.ibm.com>
Change-Id: I82f7d777b78cd126237d51e42f1e11abdf80ae68
diff --git a/meta-ibm/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend b/meta-ibm/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
index 64d1cf2..7d9a077 100644
--- a/meta-ibm/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
+++ b/meta-ibm/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
@@ -1,5 +1,4 @@
 DEPENDS:append:ibm-ac-server = " acx22-yaml-config"
-DEPENDS:append:mihawk = " acx22-yaml-config"
 DEPENDS:append:p10bmc = " p10bmc-yaml-config"
 
 # host watchdog does not work with witherspoon-tacoma host firmware
@@ -10,11 +9,7 @@
     -Dinvsensor-yaml-gen=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-inventory-sensors.yaml \
     -Dfru-yaml-gen=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-fru-read.yaml \
     "
-EXTRA_OEMESON:mihawk = " \
-    -Dsensor-yaml-gen=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-sensors.yaml \
-    -Dinvsensor-yaml-gen=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-inventory-sensors.yaml \
-    -Dfru-yaml-gen=${STAGING_DIR_HOST}${datadir}/acx22-yaml-config/ipmi-fru-read.yaml \
-    "
+
 EXTRA_OEMESON:p10bmc = " \
     -Dfru-yaml-gen=${STAGING_DIR_HOST}${datadir}/p10bmc-yaml-config/ipmi-fru-read.yaml \
     "