Clean up unused bluetooth resources

Bug: 234570979
Test: make Settings app
Change-Id: I23d5a3dc27fe5df5ba45b8593c9f2ad3d7c25cbc

tests/robotests/src/com/android/settings/bluetooth/BluetoothPairingDialogTest.java

@@ -368,14 +368,6 @@ public class BluetoothPairingDialogTest {
         assertThat(message.getVisibility()).isEqualTo(View.GONE);
     }
 
-    @Test
-    public void pairingStringIsFormattedCorrectly() {
-        final String device = "test_device";
-        final Context context = RuntimeEnvironment.application;
-        assertThat(context.getString(R.string.bluetooth_pb_acceptance_dialog_text, device, device))
-                .contains(device);
-    }
-
     @Test
     public void pairingDialogDismissedOnPositiveClick() {
         // set the dialog variant to confirmation/consent