Revert "Add live caption preference in accessibility page."

This reverts commit d64901494f.

Reason for revert: b/123636344

Change-Id: If6307935ba3613cb24f5bab2234febef83c6f7d2

src/com/android/settings/accessibility/LiveCaptionPreferenceController.java

@@ -1,58 +0,0 @@
-/*
- * Copyright (C) 2019 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 com.android.settings.accessibility;
-
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
-
-import androidx.annotation.VisibleForTesting;
-import androidx.preference.Preference;
-
-import com.android.settings.core.BasePreferenceController;
-
-import java.util.List;
-
-public class LiveCaptionPreferenceController extends BasePreferenceController {
-
-    @VisibleForTesting
-    static final Intent LIVE_CAPTION_INTENT = new Intent(
-            "com.android.settings.action.live_caption");
-
-    private final PackageManager mPackageManager;
-
-    public LiveCaptionPreferenceController(Context context, String preferenceKey) {
-        super(context, preferenceKey);
-        mPackageManager = context.getPackageManager();
-    }
-
-    @Override
-    public int getAvailabilityStatus() {
-        final List<ResolveInfo> resolved =
-                mPackageManager.queryIntentActivities(LIVE_CAPTION_INTENT, 0 /* flags */);
-        return resolved != null && !resolved.isEmpty()
-                ? AVAILABLE
-                : UNSUPPORTED_ON_DEVICE;
-    }
-
-    @Override
-    public void updateState(Preference preference) {
-        super.updateState(preference);
-        preference.setIntent(LIVE_CAPTION_INTENT);
-    }
-}