Remove the divider on "Pair new device".

Screenshot:
https://screenshot.googleplex.com/58zWxM3qqoNHerD.png
https://screenshot.googleplex.com/mgW69gQSKNeRNhW.png

Bug: 190563744
Test: manually test
Change-Id: I40e6e07d54417ccdcf2bce5e499ebb20a2d997e9
diff --git a/res/xml/connected_devices.xml b/res/xml/connected_devices.xml
index e7e3c2c..8e60648 100644
--- a/res/xml/connected_devices.xml
+++ b/res/xml/connected_devices.xml
@@ -42,7 +42,6 @@
         android:icon="@drawable/ic_add_24dp"
         android:summary="@string/connected_device_add_device_summary"
         android:fragment="com.android.settings.bluetooth.BluetoothPairingDetail"
-        settings:allowDividerAbove="true"
         settings:keywords="@string/keywords_add_bt_device"
         settings:userRestriction="no_config_bluetooth"
         settings:useAdminDisabledSummary="true"