Don't show UI on default encryption

Bug: 22989588
Change-Id: I8e7023767f1da80c872adc45871be1f8851926ad
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 2b1a97c..ab3ca5a 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -651,7 +651,7 @@
     # encryption) or trigger_restart_min_framework (other encryption)
 
 # One shot invocation to encrypt unencrypted volumes
-service encrypt /system/bin/vdc --wait cryptfs enablecrypto inplace default
+service encrypt /system/bin/vdc --wait cryptfs enablecrypto inplace default noui
     disabled
     oneshot
     # vold will set vold.decrypt to trigger_restart_framework (default