Remove manage_ilm from docs (#529)

The docs did have manage_ilm in the docs when creating and API key but it seems the scripts itself do not use this anymore. This is relevant in the context of sending data to a Serverless instance where ILM does not exist.

Also see #499

Author: ruflin

docs/configure.md

@@ -27,7 +27,6 @@ Use the following command to create an API Key for the Home Assistant component.
           "hass_writer": {
             "cluster": [
               "manage_index_templates",
-              "manage_ilm",
               "monitor"
             ],
             "indices": [
@@ -61,7 +60,6 @@ Use the following command to create an API Key for the Home Assistant component.
         "hass_writer": {
           "cluster": [
             "manage_index_templates",
-            "manage_ilm",
             "monitor"
           ],
           "indices": [