init: move healthd to late-init

Starting healthd in early-init is not needed and can delay coldboot done
Now healthd is starting at boot as usual service.

Test: check kmsg that healthd starting after /dev/.coldboot_done

Bug: 30292927
Change-Id: I367d022f5885122da49181db3db536012e83f564
diff --git a/etc/init.rc b/etc/init.rc
index 29b088d..b1473ba 100644
--- a/etc/init.rc
+++ b/etc/init.rc
@@ -5,7 +5,6 @@
     restorecon /postinstall
 
     start ueventd
-    start healthd
 
 on init
     export ANDROID_ROOT /system