Make healthd enforcing.

The kernel bug that required healthd to remain permissive was fixed by
I8a3e0db15ec5f4eb05d455a57e8446a8c2b484c2.

Change-Id: Iff07b65b943cadf949d9b747376a8621b2378bf8
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

healthd.te

@@ -16,7 +16,3 @@ allow healthd self:netlink_kobject_uevent_socket create_socket_perms;
 binder_use(healthd)
 binder_service(healthd)
 binder_call(healthd, system_server)
-
-# Workaround for 0x10 / block_suspend capability2 denials.
-# Requires a kernel patch to fix properly.
-permissive healthd;