src/Zicht/Bundle/PageBundle/Admin/PageAdmin.php
public function removeFields($fieldNames, FormMapper $formMapper)
    {
        if (!is_array($fieldNames)) {
            $fieldNames = array($fieldNames);
        }

        foreach ($fieldNames as $fieldName) {
            $formMapper->remove($fieldName);
        }

        $this->removeEmptyGroups();

        return $this;
    }
public function removeFields($fieldNames, FormMapper $formMapper)
    {
        if (!is_array($fieldNames)) {
            $fieldNames = array($fieldNames);
        }

        foreach ($fieldNames as $fieldName) {
            $formMapper->remove($fieldName);
        }

        $this->removeEmptyGroups();

        return $this;
    }
Removes field (and also removes the tab when the tab/group is empty)

@param string|array $fieldNames one fieldname or array of fieldnames
@param FormMapper $formMapper
@return self