Sort imports

Having consistent import order will reduce chance of merge
conflict between internal and external master

Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b

src/com/android/settings/bluetooth/BluetoothDiscoverableEnabler.java

@@ -26,11 +26,11 @@ import android.os.Handler;
 import android.os.SystemProperties;
 import android.util.Log;
 
+import androidx.preference.Preference;
+
 import com.android.settings.R;
 import com.android.settingslib.bluetooth.BluetoothDiscoverableTimeoutReceiver;
 
-import androidx.preference.Preference;
-
 /**
  * BluetoothDiscoverableEnabler is a helper to manage the "Discoverable"
  * checkbox. It sets/unsets discoverability and keeps track of how much time