wificond.te: Remove unnecessary permissions

Since wificond is no longer writing supplicant/hostapd conf files, we
don't need these permissions anymore.

Bug: 36645291
Test: Device boots up & connects to networks.
Change-Id: I625dfdc2c0349e128b81e01097ccb439f73beb4d

public/wificond.te

@@ -22,11 +22,6 @@ allow wificond self:netlink_generic_socket create_socket_perms_no_ioctl;
 
 r_dir_file(wificond, proc_net)
 
-# wificond writes out configuration files for wpa_supplicant/hostapd.
-# wificond also reads pid files out of this directory
-allow wificond wifi_data_file:dir rw_dir_perms;
-allow wificond wifi_data_file:file create_file_perms;
-
 # allow wificond to check permission for dumping logs
 allow wificond permission_service:service_manager find;