remove not existent label_attr options from buttons

Author: xabbuh

reference/forms/types/reset.rst

@@ -15,7 +15,6 @@ A button that resets all fields to their original values.
 | Inherited            | - `attr`_                                                           |
 | options              | - `disabled`_                                                       |
 |                      | - `label`_                                                          |
-|                      | - `label_attr`_                                                     |
 |                      | - `translation_domain`_                                             |
 +----------------------+---------------------------------------------------------------------+
 | Parent type          | :doc:`ButtonType </reference/forms/types/button>`                   |
@@ -46,6 +45,4 @@ as a key. This can be useful when you need to set a custom class for the button:
 
 .. include:: /reference/forms/types/options/button_label.rst.inc
 
-.. include:: /reference/forms/types/options/label_attr.rst.inc
-
 .. include:: /reference/forms/types/options/button_translation_domain.rst.inc

reference/forms/types/submit.rst

@@ -15,7 +15,6 @@ A submit button.
 | Inherited            | - `attr`_                                                            |
 | options              | - `disabled`_                                                        |
 |                      | - `label`_                                                           |
-|                      | - `label_attr`_                                                      |
 |                      | - `label_format`_                                                    |
 |                      | - `translation_domain`_                                              |
 |                      | - `validation_groups`_                                               |
@@ -57,8 +56,6 @@ as a key. This can be useful when you need to set a custom class for the button:
 
 .. include:: /reference/forms/types/options/button_label.rst.inc
 
-.. include:: /reference/forms/types/options/label_attr.rst.inc
-
 .. include:: /reference/forms/types/options/label_format.rst.inc
 
 .. include:: /reference/forms/types/options/button_translation_domain.rst.inc