wifi_stack: Move to network_stack process

The wifi stack APK will run inside the network_stack process. So, move
the sepolicy rules for wifi stack inside the network stack rules.

Bug: 135691051
Test: Manual tests
- manual connect to wifi networks
- Remove networks
Test: Will send for ACTS wifi regression testing
Change-Id: I9d5da80852f22fa1d12b2dbbc76b9e06c1275310
(cherry-picked from b83abf7af3df64e0d3c1b22548f2344b55aece28)
diff --git a/private/seapp_contexts b/private/seapp_contexts
index 705e03d..c74bd2c 100644
--- a/private/seapp_contexts
+++ b/private/seapp_contexts
@@ -143,9 +143,7 @@
 user=_app seinfo=platform name=com.android.traceur domain=traceur_app type=app_data_file levelFrom=all
 user=system seinfo=platform domain=system_app type=system_app_data_file
 user=bluetooth seinfo=platform domain=bluetooth type=bluetooth_data_file
-# TODO (b/135691051): wifi stack is temporarily a separate process. Will merge to network_stack once non-formal API dependencies are fixed.
-user=network_stack seinfo=network_stack name=com.android.server.wifistack domain=wifi_stack
-user=network_stack seinfo=network_stack domain=network_stack levelFrom=all type=radio_data_file
+user=network_stack seinfo=network_stack domain=network_stack type=radio_data_file
 user=nfc seinfo=platform domain=nfc type=nfc_data_file
 user=secure_element seinfo=platform domain=secure_element levelFrom=all
 user=radio seinfo=platform domain=radio type=radio_data_file