The simple approach will be to hack the core by editing file qa-include/plugins/qa-widget-ask-box.php.
Edit based on comments (removing the label of the editor):
1. Edit file qa-theme/<your-theme>/qa-theme.php
2. Add (if it doesn't exist) or merge (if it already exists) this function:
public function initialize() {
parent::initialize();
if ($this->template === 'ask') {
unset($this->content['form']['fields']['content']['label']);
}
}
Edit based on comments (removing the whole editor field):
1. Navigate to admin/posting and set Default editor for questions as Basic Editor.
2. Edit file qa-theme/<your-theme>/qa-theme.php
3. Add (if it doesn't exist) or merge (if it already exists) this function:
public function initialize() {
parent::initialize();
if ($this->template === 'ask') {
unset($this->content['form']['fields']['content']);
}
}