zenfone7: Remove wait_for_keymaster and all references

No longer needed now init listens for property changes on a
separate thread.

Bug: 186580823
Test: Cuttlefish boots successfully
Change-Id: Ief3a546d2154231d18957c2f703bd128966d7288
diff --git a/prebuilt/vendor/etc/init/hw/init.target.rc b/prebuilt/vendor/etc/init/hw/init.target.rc
index deb880e..735a581 100644
--- a/prebuilt/vendor/etc/init/hw/init.target.rc
+++ b/prebuilt/vendor/etc/init/hw/init.target.rc
@@ -92,8 +92,6 @@
     write /dev/ipa 1
 
 on late-fs
-    wait_for_prop hwservicemanager.ready true
-    exec_start wait_for_keymaster
     mount_all /vendor/etc/fstab.qcom --late
 
 on post-fs-data