capture_client: remove unnecessary pthread_set_cancel_type

capture_client.c

@@ -70,7 +70,6 @@ disk_thread (void *arg)
 	size_t bytes_per_frame = samples_per_frame * sample_size;
 	void *framebuf = malloc (bytes_per_frame);
 
-	pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
 	pthread_mutex_lock (&disk_thread_lock);
 
 	info->status = 0;