Revert "Create exported mode flag library for package android.os""

This reverts commit e8b6adbd5317f565ebb3907967c63a88c32ef340.

Reason for revert: <Droidmonitor created revert due to b/352479110. Will be verifying through ABTD before submission.>

Change-Id: Ifaa15f62310189f4d123f294e4b7e991b05959a3
diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index 8400848..5f23eda 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -323,7 +323,6 @@
 aconfig_declarations {
     name: "android.os.flags-aconfig",
     package: "android.os",
-    exportable: true,
     container: "system",
     srcs: ["core/java/android/os/*.aconfig"],
 }
@@ -341,13 +340,6 @@
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
 
-java_aconfig_library {
-    name: "android.os.flags-aconfig-java-export",
-    aconfig_declarations: "android.os.flags-aconfig",
-    defaults: ["framework-minus-apex-aconfig-java-defaults"],
-    mode: "exported",
-}
-
 // VirtualDeviceManager
 cc_aconfig_library {
     name: "android.companion.virtualdevice.flags-aconfig-cc",
diff --git a/core/java/android/os/flags.aconfig b/core/java/android/os/flags.aconfig
index aa6f6a4..200c1d8 100644
--- a/core/java/android/os/flags.aconfig
+++ b/core/java/android/os/flags.aconfig
@@ -44,7 +44,6 @@
     namespace: "profile_experiences"
     description: "Guards a new Private Profile type in UserManager - everything from its setup to config to deletion."
     bug: "299069460"
-    is_exported: true
 }
 
 flag {