Move ShadownDeviceConfig.java to tests/robotests/testutils.

This is to solve the presubmit issue of ag/24543390.

Bug: 294858168
Test: build
Change-Id: I40c2ed7134676490d52aa63189dc16b3a7668a71

tests/robotests/src/com/android/settings/testutils/shadow/ShadowDeviceConfig.java

@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2018 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.shadow;
-
-import org.robolectric.annotation.Config;
-import org.robolectric.annotation.Implementation;
-import org.robolectric.annotation.Implements;
-import org.robolectric.annotation.Resetter;
-
-import java.util.HashMap;
-import java.util.Map;
-
-@Implements(android.provider.DeviceConfig.class)
-public class ShadowDeviceConfig {
-
-    private static Map<String, String> sPropertyMaps = new HashMap<>();
-
-    @Resetter
-    public static void reset() {
-        sPropertyMaps.clear();
-    }
-
-    @Implementation
-    public static boolean setProperty(
-            String namespace, String name, String value, boolean makeDefault) {
-        sPropertyMaps.put(name, value);
-        return true;
-    }
-
-    @Implementation
-    public static String getProperty(String namespace, String name) {
-        return sPropertyMaps.get(name);
-    }
-}
-
-