remove beta warning label for categorization fields GA

scripts/templates/field_values.j2

@@ -2,13 +2,6 @@
 [[ecs-category-field-values-reference]]
 == {ecs} Categorization Fields
 
-WARNING: This section of ECS is in beta and is subject to change. These allowed values
-are still under active development. Additional values will be published gradually,
-and some of the values or relationships described here may change.
-Users who want to provide feedback, or who want to have a look at
-upcoming allowed values can visit this public feedback document
-https://ela.st/ecs-categories-draft.
-
 At a high level, ECS provides fields to classify events in two different ways:
 "Where it's from" (e.g., `event.module`, `event.dataset`, `agent.type`, `observer.type`, etc.),
 and "What it is." The categorization fields hold the "What it is" information,
@@ -34,11 +27,6 @@ once the appropriate categorization values are published, in a later release.
 
 {{ field['description']|replace("\n", "\n\n") }}
 
-WARNING: After the beta period for categorization, only the allowed categorization
-values listed in the ECS repository and official ECS documentation should be considered
-official. Use of any other values may result in incompatible implementations
-that will require subsequent breaking changes.
-
 *Allowed Values*
 {% for value_details in field['allowed_values'] %}
 * <<ecs-{{ field['dashed_name'] }}-{{ value_details['name'] }},{{ value_details['name'] }}>>