sm7125: overlay: Drop useless reference to smooth display

doesnt exist in source, idk why i didnt remove this shit sooner

overlay/packages/apps/Settings/res/values/config.xml

@@ -15,8 +15,6 @@
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
     <!-- Whether to show min refresh rate in display settings -->
     <bool name="config_show_refresh_rate_controls">true</bool>
-    <!-- Whether to show smooth display in display settings -->
-    <bool name="config_show_smooth_display">false</bool>
 
     <!-- The number of vibration intensity levels supported by the device.