Move 'Apply' string from ThemePicker to WallpaperPicker2 am: 2e0e1e8275 am: cb1622b067

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/ThemePicker/+/16344704

Change-Id: I097335d2ed6bee0be68314d59a111c4a41aa15f0
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 0ea2f7e..3eca599 100755
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -42,10 +42,6 @@
         the one bundled with selected Theme [CHAR LIMIT=35]-->
     <string name="keep_my_wallpaper">Keep current wallpaper</string>
 
-    <!-- Label for a button that allows the user to apply the currently selected customization option.
-        [CHAR LIMIT=20] -->
-    <string name="apply_btn">Apply</string>
-
     <!-- Content description of theme preview card. [CHAR_LIMIT=30]-->
     <string name="theme_preview_card_content_description">Style preview</string>