MidiManager: fix double BTLE callback

Stop openBluetoothDevice() from calling its callback twice.

Bug: 23218338
Change-Id: I2e738b22a124c0336c46bef05680a82ee1f59e79
Signed-off-by: Phil Burk <philburk@google.com>
(cherry picked from commit 0ca998d79f)

media/java/android/media/midi/MidiManager.java

@@ -288,7 +288,6 @@ public final class MidiManager {
                         // fetch MidiDeviceInfo from the server
                         MidiDeviceInfo deviceInfo = server.getDeviceInfo();
                         device = new MidiDevice(deviceInfo, server, mService, mToken, deviceToken);
-                        sendOpenDeviceResponse(device, listenerF, handlerF);
                     } catch (RemoteException e) {
                         Log.e(TAG, "remote exception in getDeviceInfo()");
                     }