Removes the default paragraph type.
$content_type: Content type name that contains the paragraphs field.
protected function removeDefaultParagraphType($content_type) {
$this
->drupalGet('node/add/' . $content_type);
$this
->submitForm([], 'Remove');
$this
->submitForm([], 'Confirm removal');
$this
->assertSession()
->pageTextNotContains('No paragraphs added yet.');
}