Qt with pulseaudio - How to omit it?

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I looked for some solutions and what I found:
My application hangs in this place:

QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);

QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);

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- when it tries to get devices list.
Also I found that Qt pulseaudio support works by plug-in.
QtMultimedia framework loads plug-in and it hangs when pa is not running.
I tried to remove that plugin from Qt plugins dir and then my app started but it was deaf and muted - no audio devices were available.
Maybe is there a way to unload that plugin from my app?