Update CatalogPageAdmin.php (#63)

Add filter header back to Catalog Manager

Author: Rhym

src/ModelAdmin/CatalogPageAdmin.php

@@ -78,7 +78,6 @@ protected function getCatalogEditForm($model, $id = null, $fields = null)
             false,
             $this->getList(),
             $fieldConfig = GridFieldConfig_RecordEditor::create(static::config()->get('page_length'))
-                ->removeComponentsByType(GridFieldFilterHeader::class)
                 ->removeComponentsByType(GridFieldDeleteAction::class)
                 ->addComponent(new GridfieldPublishAction())
         );