Do not install tethering in TEST_MAPPING

The current tethering module has in-progress changes in non-mainline
branches, so it cannot be installed.
Disable the tests in non-mainline branches, considering that they are
still run in mainline branches, which will contain the same tethering
code, but without the connectivity artifacts added to the tethering
apex.

Bug: 177290955
Test: TEST_MAPPING needs to be tested on the infra
Ignore-AOSP-First: This change must not go into AOSP
Change-Id: I6175322d97cb8e43b6cb75e6200b6a546f4f2013
diff --git a/TEST_MAPPING b/TEST_MAPPING
index a2ed850..1b6ae19 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -20,7 +20,8 @@
     // We must specify at least one module here or the tests won't run. Use the same set as CTS
     // so in theory the infra would not need to reinstall/reboot devices to run both.
     {
-      "name": "NetworkStackTests[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
+      // TODO: add back tethering when it is updatable in this branch
+      "name": "NetworkStackTests[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex]"
     }
   ],
   "imports": [