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/dbus/thermal-policy.bb b/meta-ibm/recipes-phosphor/dbus/thermal-policy.bb
index 8eb5bc2..41248d0 100644
--- a/meta-ibm/recipes-phosphor/dbus/thermal-policy.bb
+++ b/meta-ibm/recipes-phosphor/dbus/thermal-policy.bb
@@ -9,15 +9,10 @@
 FILESEXTRAPATHS:prepend := "${THISDIR}/${BPN}:"
 
 SRC_URI:append:ibm-ac-server = " file://thermal-policy.yaml"
-SRC_URI:append:mihawk = " file://thermal-policy.yaml"
 
 do_install:ibm-ac-server() {
         install -D ${WORKDIR}/thermal-policy.yaml ${D}${config_dir}/thermal-policy.yaml
 }
 
-do_install:mihawk() {
-        install -D ${WORKDIR}/thermal-policy.yaml ${D}${config_dir}/thermal-policy.yaml
-}
 
-FILES:${PN}:append:ibm-ac-server = " ${config_dir}/thermal-policy.yaml"
-FILES:${PN}:append:mihawk = " ${config_dir}/thermal-policy.yaml"
+FILES:${PN}:append:ibm-ac-server = " ${config_dir}/thermal-policy.yaml"
\ No newline at end of file