Remove special rules for interacting with sockets from init.

Change-Id: I544c0c1bbe84834970958a65fcef1d10e7e29047

wpa_supplicant.te

@@ -18,6 +18,3 @@ allow wpa random_device:chr_file r_file_perms;
 # Create a socket for receiving info from wpa
 type_transition wpa wifi_data_file:sock_file wpa_socket;
 allow wpa wpa_socket:sock_file create_file_perms;
-
-# Allow wpa to read and write unix dgram sockets from init
-allow wpa init:unix_dgram_socket { read write };