Remove usage of private resources in SettingsLib.

Bug: 198300087
Test: manual
Change-Id: I4f615099b48ceabe22dd2455496fca905fdd483b
diff --git a/packages/SettingsLib/SettingsTheme/res/values-v31/config.xml b/packages/SettingsLib/SettingsTheme/res/values-v31/config.xml
index 8993d0f..4860ad3 100644
--- a/packages/SettingsLib/SettingsTheme/res/values-v31/config.xml
+++ b/packages/SettingsLib/SettingsTheme/res/values-v31/config.xml
@@ -17,4 +17,6 @@
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
     <bool name="settingslib_config_icon_space_reserved">false</bool>
     <bool name="settingslib_config_allow_divider">false</bool>
+    <!-- Name of a font family to use for headlines in SettingsLib. -->
+    <string name="settingslib_config_headlineFontFamily" translatable="false"></string>
 </resources>
\ No newline at end of file
diff --git a/packages/SettingsLib/SettingsTheme/res/values-v31/strings.xml b/packages/SettingsLib/SettingsTheme/res/values-v31/strings.xml
deleted file mode 100644
index 6d072a9..0000000
--- a/packages/SettingsLib/SettingsTheme/res/values-v31/strings.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2021 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.
--->
-
-<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
-    <!-- Name of a font family to use for headlines in SettingsLib. -->
-    <string name="settingslib_config_headlineFontFamily" translatable="false">
-        @*android:string/config_headlineFontFamily
-    </string>
-
-    <!-- Name of a font family to use for headlines-medium in SettingsLib. -->
-    <string name="settingslib_config_headlineFontFamilyMedium" translatable="false">
-        @*android:string/config_headlineFontFamilyMedium
-    </string>
-
-    <!-- Name of a font family to use for body in SettingsLib. -->
-    <string name="settingslib_config_bodyFontFamily" translatable="false">
-        @*android:string/config_bodyFontFamily
-    </string>
-
-    <!-- Name of a font family to use for body-medium in SettingsLib. -->
-    <string name="settingslib_config_bodyFontFamilyMedium" translatable="false">
-        @*android:string/config_bodyFontFamilyMedium
-    </string>
-</resources>