overlay: Remove config_persistUsbDriveNotification

* No one changes this overlay, so we assume it always be true

Change-Id: Iaa5674a7c5c20a2bad59acaea66629c720710a91

overlay/common/frameworks/base/core/res/res/values/config.xml

@@ -51,9 +51,6 @@
     <!-- Enable lockscreen rotation by default -->
     <bool name="config_enableLockScreenRotation">true</bool>
 
-    <!-- Whether to persist the notification for when a usb drive device is plugged in -->
-    <bool name="config_persistUsbDriveNotification">true</bool>
-
     <!-- Set this to true to enable the platform's auto-power-save modes like doze and
          app standby.  These are not enabled by default because they require a standard
          cloud-to-device messaging service for apps to interact correctly with the modes