Remove onSessionChanged in ImsMedia HAL

Bug: 250720912
Test: Build(mm)
Change-Id: Iab5d7b74522efcb6483c8c8730971d6be9c77c54
diff --git a/radio/aidl/aidl_api/android.hardware.radio.ims.media/current/android/hardware/radio/ims/media/IImsMediaSessionListener.aidl b/radio/aidl/aidl_api/android.hardware.radio.ims.media/current/android/hardware/radio/ims/media/IImsMediaSessionListener.aidl
index 6159780..d515ac8 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.ims.media/current/android/hardware/radio/ims/media/IImsMediaSessionListener.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.ims.media/current/android/hardware/radio/ims/media/IImsMediaSessionListener.aidl
@@ -34,7 +34,6 @@
 package android.hardware.radio.ims.media;
 @VintfStability
 interface IImsMediaSessionListener {
-  oneway void onSessionChanged(android.hardware.radio.ims.media.RtpSessionState state);
   oneway void onModifySessionResponse(in android.hardware.radio.ims.media.RtpConfig config, android.hardware.radio.ims.media.RtpError error);
   oneway void onAddConfigResponse(in android.hardware.radio.ims.media.RtpConfig config, android.hardware.radio.ims.media.RtpError error);
   oneway void onConfirmConfigResponse(in android.hardware.radio.ims.media.RtpConfig config, android.hardware.radio.ims.media.RtpError error);
diff --git a/radio/aidl/aidl_api/android.hardware.radio.ims.media/current/android/hardware/radio/ims/media/RtpSessionState.aidl b/radio/aidl/aidl_api/android.hardware.radio.ims.media/current/android/hardware/radio/ims/media/RtpSessionState.aidl
deleted file mode 100644
index 02bf98a..0000000
--- a/radio/aidl/aidl_api/android.hardware.radio.ims.media/current/android/hardware/radio/ims/media/RtpSessionState.aidl
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.radio.ims.media;
-@Backing(type="int") @VintfStability
-enum RtpSessionState {
-  OPEN = 0,
-  ACTIVE = 1,
-  SUSPENDED = 2,
-  CLOSED = 3,
-}
diff --git a/radio/aidl/android/hardware/radio/ims/media/IImsMediaSessionListener.aidl b/radio/aidl/android/hardware/radio/ims/media/IImsMediaSessionListener.aidl
index 317aeb7..abf7fcd 100644
--- a/radio/aidl/android/hardware/radio/ims/media/IImsMediaSessionListener.aidl
+++ b/radio/aidl/android/hardware/radio/ims/media/IImsMediaSessionListener.aidl
@@ -21,7 +21,6 @@
 import android.hardware.radio.ims.media.RtpConfig;
 import android.hardware.radio.ims.media.RtpError;
 import android.hardware.radio.ims.media.RtpHeaderExtension;
-import android.hardware.radio.ims.media.RtpSessionState;
 
 /**
  * Interface declaring listener functions for unsolicited IMS media notifications per session.
@@ -29,13 +28,6 @@
 @VintfStability
 oneway interface IImsMediaSessionListener {
     /**
-     * Notifies whenever the session state changed.
-     *
-     * @param state RTP session state
-     */
-    void onSessionChanged(RtpSessionState state);
-
-    /**
      * Notifies the result of IImsMediaSession#modifySession() API.
      *
      * @param config The RTP config passed in IImsMediaSession#modifySession() API
diff --git a/radio/aidl/android/hardware/radio/ims/media/RtpSessionState.aidl b/radio/aidl/android/hardware/radio/ims/media/RtpSessionState.aidl
deleted file mode 100644
index 57ba69a..0000000
--- a/radio/aidl/android/hardware/radio/ims/media/RtpSessionState.aidl
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.radio.ims.media;
-
-@VintfStability
-@Backing(type="int")
-enum RtpSessionState {
-    /** The RTP session is opened and media flow is not started */
-    OPEN = 0,
-    /** The RTP session has active media flow */
-    ACTIVE = 1,
-    /** The RTP session is suspended */
-    SUSPENDED = 2,
-    /** The RTP session is closed */
-    CLOSED = 3,
-}