diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 5347719ef9932..ce6815f10b30c 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -2679,8 +2679,6 @@
     <string name="yes">OK</string>
     <!-- Preference framework strings. -->
     <string name="no">Cancel</string>
-    <!-- Preference framework strings. -->
-    <string name="close">CLOSE</string>
     <!-- This is the generic "attention" string to be used in attention dialogs.  Typically
          combined with setIconAttribute(android.R.attr.alertDialogIcon)
          (or setIcon(android.R.drawable.ic_dialog_alert) on legacy versions of the platform) -->
@@ -2813,11 +2811,6 @@
     <!-- [CHAR LIMIT=200] Compat mode dialog: hint to re-enable compat mode dialog. -->
     <string name="screen_compat_mode_hint">Re-enable this in System settings &gt; Apps &gt; Downloaded.</string>
 
-    <!-- Text of the alert that is displayed when a top application is killed by lmk. -->
-    <string name="top_app_killed_title">App isn\'t responding</string>
-    <!-- Top app killed by lmk dialog message. -->
-    <string name="top_app_killed_message"><xliff:g id="app_name">%1$s</xliff:g> may be using too much memory.</string>
-
     <!-- [CHAR LIMIT=200] Unsupported display size dialog: message. Refers to "Display size" setting. -->
     <string name="unsupported_display_size_message"><xliff:g id="app_name">%1$s</xliff:g> does not support the current Display size setting and may behave unexpectedly.</string>
     <!-- [CHAR LIMIT=50] Unsupported display size dialog: check box label. -->
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index b36630e07f683..0548db69a05da 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -1890,9 +1890,6 @@
   <java-symbol type="string" name="anr_application_process" />
   <java-symbol type="string" name="anr_process" />
   <java-symbol type="string" name="anr_title" />
-  <java-symbol type="string" name="top_app_killed_title" />
-  <java-symbol type="string" name="top_app_killed_message" />
-  <java-symbol type="string" name="close" />
   <java-symbol type="string" name="car_mode_disable_notification_message" />
   <java-symbol type="string" name="car_mode_disable_notification_title" />
   <java-symbol type="string" name="chooser_wallpaper" />
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index b4741d12bc150..1520b96a4afd4 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -1690,7 +1690,6 @@ public class ActivityManagerService extends IActivityManager.Stub
     static final int SERVICE_FOREGROUND_CRASH_MSG = 69;
     static final int DISPATCH_OOM_ADJ_OBSERVER_MSG = 70;
     static final int START_USER_SWITCH_FG_MSG = 712;
-    static final int TOP_APP_KILLED_BY_LMK_MSG = 73;
     static final int NOTIFY_VR_KEYGUARD_MSG = 74;
 
     static final int FIRST_ACTIVITY_STACK_MSG = 100;
@@ -1923,17 +1922,6 @@ public class ActivityManagerService extends IActivityManager.Stub
                 dispatchProcessDied(pid, uid);
                 break;
             }
-            case TOP_APP_KILLED_BY_LMK_MSG: {
-                final String appName = (String) msg.obj;
-                final AlertDialog d = new BaseErrorDialog(mUiContext);
-                d.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ERROR);
-                d.setTitle(mUiContext.getText(R.string.top_app_killed_title));
-                d.setMessage(mUiContext.getString(R.string.top_app_killed_message, appName));
-                d.setButton(DialogInterface.BUTTON_POSITIVE, mUiContext.getText(R.string.close),
-                        obtainMessage(DISMISS_DIALOG_UI_MSG, d));
-                d.show();
-                break;
-            }
             case DISPATCH_UIDS_CHANGED_UI_MSG: {
                 dispatchUidsChanged();
             } break;
@@ -5459,7 +5447,6 @@ public class ActivityManagerService extends IActivityManager.Stub
             boolean doLowMem = app.instr == null;
             boolean doOomAdj = doLowMem;
             if (!app.killedByAm) {
-                maybeNotifyTopAppKilled(app);
                 Slog.i(TAG, "Process " + app.processName + " (pid " + pid + ") has died: "
                         + ProcessList.makeOomAdjString(app.setAdj)
                         + ProcessList.makeProcStateString(app.setProcState));
@@ -5493,23 +5480,6 @@ public class ActivityManagerService extends IActivityManager.Stub
         }
     }
 
-    /** Show system error dialog when a top app is killed by LMK */
-    void maybeNotifyTopAppKilled(ProcessRecord app) {
-        if (!shouldNotifyTopAppKilled(app)) {
-            return;
-        }
-
-        Message msg = mHandler.obtainMessage(TOP_APP_KILLED_BY_LMK_MSG);
-        msg.obj = mContext.getPackageManager().getApplicationLabel(app.info);
-        mUiHandler.sendMessage(msg);
-    }
-
-    /** Only show notification when the top app is killed on low ram devices */
-    private boolean shouldNotifyTopAppKilled(ProcessRecord app) {
-        return app.curSchedGroup == ProcessList.SCHED_GROUP_TOP_APP &&
-            ActivityManager.isLowRamDeviceStatic();
-    }
-
     /**
      * If a stack trace dump file is configured, dump process stack traces.
      * @param clearTraces causes the dump file to be erased prior to the new