Revert "system_server, bluetooth: grant access to priv socket ioctls"

This reverts commit f19bcfd5.

Bug: 31364540
Change-Id: I41d71202fe7d2e67742edd7915a95d37172ba7ea

bluetooth.te

@@ -2,8 +2,6 @@
 type bluetooth, domain, domain_deprecated;
 app_domain(bluetooth)
 net_domain(bluetooth)
-# Allow access to net_admin ioctls
-allowxperm bluetooth self:udp_socket ioctl priv_sock_ioctls;
 
 wakelock_use(bluetooth);
 

system_server.te

@@ -42,8 +42,8 @@ allow system_server zygote:unix_stream_socket { getopt getattr };
 # system server gets network and bluetooth permissions.
 net_domain(system_server)
 # in addition to ioctls whitelisted for all domains, also allow system_server
-# to use privileged ioctls commands. Needed to set up VPNs.
-allowxperm system_server self:udp_socket ioctl priv_sock_ioctls;
+# to use:
+allowxperm system_server self:udp_socket ioctl SIOCSIFFLAGS;
 bluetooth_domain(system_server)
 
 # These are the capabilities assigned by the zygote to the