Fix phone muted conditional card not show up

When DND mode is on, the phone muted conditional card will not appear.
The phone muted event is independent of DND mode, so the condition of
DND mode is taken out.

Bug: 119312937
Test: visual
Change-Id: Ie79dca1e4f607e666014512855922db10aa5a3d7
diff --git a/src/com/android/settings/homepage/contextualcards/conditional/RingerMutedConditionController.java b/src/com/android/settings/homepage/contextualcards/conditional/RingerMutedConditionController.java
index 09b75eb..6dab6b8 100644
--- a/src/com/android/settings/homepage/contextualcards/conditional/RingerMutedConditionController.java
+++ b/src/com/android/settings/homepage/contextualcards/conditional/RingerMutedConditionController.java
@@ -16,12 +16,8 @@
 
 package com.android.settings.homepage.contextualcards.conditional;
 
-import static android.content.Context.NOTIFICATION_SERVICE;
-
-import android.app.NotificationManager;
 import android.content.Context;
 import android.media.AudioManager;
-import android.provider.Settings;
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
@@ -32,14 +28,11 @@
 public class RingerMutedConditionController extends AbnormalRingerConditionController {
     static final int ID = Objects.hash("RingerMutedConditionController");
 
-    private final NotificationManager mNotificationManager;
     private final Context mAppContext;
 
     public RingerMutedConditionController(Context appContext, ConditionManager conditionManager) {
         super(appContext, conditionManager);
         mAppContext = appContext;
-        mNotificationManager =
-                (NotificationManager) appContext.getSystemService(NOTIFICATION_SERVICE);
     }
 
     @Override
@@ -49,14 +42,7 @@
 
     @Override
     public boolean isDisplayable() {
-        int zen = Settings.Global.ZEN_MODE_OFF;
-        if (mNotificationManager != null) {
-            zen = mNotificationManager.getZenMode();
-        }
-        final boolean zenModeEnabled = zen != Settings.Global.ZEN_MODE_OFF;
-        final boolean isSilent =
-                mAudioManager.getRingerModeInternal() == AudioManager.RINGER_MODE_SILENT;
-        return isSilent && !zenModeEnabled;
+        return mAudioManager.getRingerModeInternal() == AudioManager.RINGER_MODE_SILENT;
     }
 
     @Override