Revert "[Provider Model] Replace WiFi panel to Internet panel"

This reverts commit c33f69673a.

Reason for revert: Because Wi-Fi toggle design is rollback, resume the Wi-Fi panel as well.

Bug: 190563749
Merged-In: Ia214ff9abaa7f4f33c485ca9aa72f73749ce7fc3
Change-Id: Ia214ff9abaa7f4f33c485ca9aa72f73749ce7fc3
(cherry picked from commit 368852424c)

tests/unit/src/com/android/settings/testutils/FeatureFlagUtilsRule.java

@@ -1,68 +0,0 @@
-/*
- * Copyright (C) 2020 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.testutils;
-
-import android.content.Context;
-import android.util.FeatureFlagUtils;
-
-import androidx.test.core.app.ApplicationProvider;
-
-import org.junit.rules.ExternalResource;
-
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * A test rule that is used to automatically recover the FeatureFlagUtils resource after testing.
- *
- * Example:
- * <pre class="code"><code class="java">
- * public class ExampleTest {
- *
- *     &#064;Rule
- *     public final FeatureFlagUtilsRule mFeatureFlagUtilsRule = new FeatureFlagUtilsRule();
- *
- * }
- * </code></pre>
- */
-public class FeatureFlagUtilsRule extends ExternalResource {
-
-    private Context mContext;
-    private Map<String, Boolean> mBackupFeatureFlags = new HashMap<String, Boolean>();
-
-    @Override
-    protected void before() throws Throwable {
-        mContext = ApplicationProvider.getApplicationContext();
-    }
-
-    @Override
-    protected void after() {
-        mBackupFeatureFlags.forEach((k, v) -> FeatureFlagUtils.setEnabled(mContext, k, v));
-    }
-
-    public void setEnabled(String feature, boolean enabled) {
-        if (enabled == FeatureFlagUtils.isEnabled(mContext, feature)) {
-            return;
-        }
-        mBackupFeatureFlags.putIfAbsent(feature, !enabled);
-        FeatureFlagUtils.setEnabled(mContext, feature, enabled);
-    }
-
-    public void setProviderModelEnabled(boolean enabled) {
-        setEnabled(FeatureFlagUtils.SETTINGS_PROVIDER_MODEL, enabled);
-    }
-}