wificond_service: drop system_service typeattribute

wificond_service is not a system_server service, so drop the
typeattribute.

Test: compile
Change-Id: Ic212dd2c8bc897fbdc13ca33a9864ac8d4e68732
Signed-off-by: William Roberts <william.c.roberts@intel.com>

public/service.te

@@ -133,7 +133,7 @@ type webviewupdate_service, app_api_service, system_server_service, service_mana
 type wifip2p_service, app_api_service, system_server_service, service_manager_type;
 type wifiscanner_service, system_api_service, system_server_service, service_manager_type;
 type wifi_service, app_api_service, system_server_service, service_manager_type;
-type wificond_service, system_server_service, service_manager_type;
+type wificond_service, service_manager_type;
 type wifiaware_service, app_api_service, system_server_service, service_manager_type;
 type window_service, system_api_service, system_server_service, service_manager_type;
 type wpa_supplicant_service, system_server_service, service_manager_type;