Let init transition hal_usb_default into its domain

hal_usb_default_exec is the domain of the executable file, but the USB
HAL process itself should run in hal_usb_default. Once it is running in
this domain, we don't need the extra policies for hal_usb_default_exec
anymore.

Issue: FP2P-226
Change-Id: Ide6b8ef762b75b68dd3287d1d559bf5e88cea694
diff --git a/vendor/hal_usb_default.te b/vendor/hal_usb_default.te
index c3da49b..e4fd061 100644
--- a/vendor/hal_usb_default.te
+++ b/vendor/hal_usb_default.te
@@ -4,9 +4,4 @@
 type hal_usb_default_exec, exec_type, vendor_file_type, file_type;
 init_daemon_domain(hal_usb_default)
 
-#User build bringup changes
-
-allow init hal_usb_default_exec:file { getattr open read execute map };
-allow hal_usb_default hal_usb_default_exec:file { entrypoint open read execute getattr map };
-type_transition init hal_usb_default_exec:process hal_usb_default;
-allow init hal_usb_default_exec:process transition;
+domain_trans(init, init_exec, hal_usb_default)