Revert^2 "add sepolicy type for widevine/drm hal in system"

This reverts commit a0e696357c7f3da72ebdb6237b2343e6b8a7afac.

Reason for revert: https://googleplex-android-review.git.corp.google.com/q/hashtag:%22b/398929391%22+(status:open%20OR%20status:merged)

Change-Id: I379734cc1adb33b874ba35daa9ace7485c79baa8
diff --git a/private/hal_widevine_system.te b/private/hal_widevine_system.te
new file mode 100644
index 0000000..57213b3
--- /dev/null
+++ b/private/hal_widevine_system.te
@@ -0,0 +1,7 @@
+type hal_widevine_system, domain, coredomain;
+hal_server_domain(hal_widevine_system, hal_drm)
+
+type hal_widevine_system_exec, exec_type, system_file_type, file_type;
+init_daemon_domain(hal_widevine_system)
+
+allow hal_widevine_system self:vsock_socket { create_socket_perms_no_ioctl };