remove out-of-process flag

The logic dealing with in vs out-of-process tethering flags
was added in aosp/master once it was already not merging to tm-dev,
thus ending up only in udc-dev, it was later removed in aosp/master,
and then cherrypicked to udc-dev.

As such there is no shipping version of the bpfloader
(besides early U developer previews and betas)
with this requirement.

This will make September+ releases of the tethering apex incompatible
with U developer previews and betas 1 and 2.

(ie. any U build not including https://googleplex-android-review.git.corp.google.com/c/platform/system/bpf/+/23214402
which was merged into udc-dev on May 14th @ 18:00)

This change has a dependency on
https://googleplex-android-review.git.corp.google.com/c/platform/vendor/google/modules/TetheringGoogle/+/23243439

Test: TreeHugger
Bug: 279942846
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I52d0ea706a8e2cb5c37874ed54f199035c14966c
diff --git a/Tethering/apex/Android.bp b/Tethering/apex/Android.bp
index 253fb00..4bfd1fb 100644
--- a/Tethering/apex/Android.bp
+++ b/Tethering/apex/Android.bp
@@ -18,13 +18,6 @@
     default_applicable_licenses: ["Android-Apache-2.0"],
 }
 
-prebuilt_etc {
-    name: "TetheringOutOfProcessFlag",
-    src: "out-of-process",
-    filename_from_src: true,
-    sub_dir: "flag",
-}
-
 // Defaults to enable/disable java targets which uses development APIs. "enabled" may have a
 // different value depending on the branch.
 java_defaults {
@@ -122,7 +115,6 @@
     prebuilts: [
         "current_sdkinfo",
         "privapp_allowlist_com.android.tethering",
-        "TetheringOutOfProcessFlag",
     ],
     manifest: "manifest.json",
     key: "com.android.tethering.key",
diff --git a/Tethering/apex/out-of-process b/Tethering/apex/out-of-process
deleted file mode 100644
index e69de29..0000000
--- a/Tethering/apex/out-of-process
+++ /dev/null