Removed design system string resources from fastlane

Author: nbradbury

fastlane/resources/values/strings.xml

@@ -995,15 +995,6 @@
     <string name="debug_cookies_cookie_name_hint" translatable="false">cookie_name</string>
     <string name="debug_cookies_cookie_value_hint" translatable="false">cookie_value</string>
 
-    <!-- Design System -->
-    <string name="preference_design_system" translatable="false">Design System</string>
-    <string name="design_system_foundation" translatable="false">Foundation</string>
-    <string name="design_system_components" translatable="false">Components</string>
-    <string name="design_system_foundation_colors" translatable="false">Colors</string>
-    <string name="design_system_foundation_fonts" translatable="false">Fonts</string>
-    <string name="design_system_foundation_lengths" translatable="false">Lengths</string>
-    <string name="design_system_components_dsbutton" translatable="false">DSButton</string>
-
     <!-- stats -->
     <string name="stats">Stats</string>
     <string name="stats_jetpack_connection_setup_info">To use Stats on your WordPress site, you\'ll need to install the Jetpack plugin.</string>