Remove custom API filters and suggest solution via templates

awx/api/templates/api/host_metric_detail.md

@@ -0,0 +1,18 @@
+{% ifmeth GET %}
+# Retrieve {{ model_verbose_name|title|anora }}:
+
+Make GET request to this resource to retrieve a single {{ model_verbose_name }}
+record containing the following fields:
+
+{% include "api/_result_fields_common.md" %}
+{% endifmeth %}
+
+{% ifmeth DELETE %}
+# Delete {{ model_verbose_name|title|anora }}:
+
+Make a DELETE request to this resource to soft-delete this {{ model_verbose_name }}.
+
+A soft deletion will mark the `deleted` field as true and exclude the host
+metric from license calculations.
+This may be undone later if the same hostname is automated again afterwards.
+{% endifmeth %}

awx/api/templates/api/host_metric_summary_monthly_list.md

@@ -0,0 +1,12 @@
+# Intended Use Case
+
+To get summaries from a certain day or earlier, you can filter this
+endpoint in the following way.
+
+    ?date__gte=2023-01-01
+
+This will return summaries that were produced on that date or later.
+These host metric monthly summaries should be automatically produced
+by a background task that runs once each month.
+
+{% include "api/list_api_view.md" %}