Revert "Revive event.name attribute (#2715)" (#2914)

Author: pellared

.chloggen/2597.yaml

@@ -49,7 +49,6 @@ body:
         - area:elasticsearch
         - area:enduser
         - area:error
-        - area:event
         - area:exception
         - area:faas
         - area:feature-flag

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -41,7 +41,6 @@ body:
         - area:elasticsearch
         - area:enduser
         - area:error
-        - area:event
         - area:exception
         - area:faas
         - area:feature-flag

.github/ISSUE_TEMPLATE/change_proposal.yaml

@@ -52,7 +52,6 @@ body:
         - area:elasticsearch
         - area:enduser
         - area:error
-        - area:event
         - area:exception
         - area:faas
         - area:feature-flag

.github/ISSUE_TEMPLATE/new-conventions.yaml

@@ -9,6 +9,4 @@ Attributes for Events represented using Log Records.
 
 | Attribute | Type | Description | Examples | Stability |
 |---|---|---|---|---|
-| <a id="event-name" href="#event-name">`event.name`</a> | string | Identifies the class / type of event. [1] | `browser.mouse.click`; `device.app.lifecycle` | ![Development](https://img.shields.io/badge/-development-blue) |
-
-**[1] `event.name`:** This attribute SHOULD be used by non-OTLP exporters when destination does not support `EventName` or equivalent field. This attribute MAY be used by applications using existing logging libraries so that it can be used to set the `EventName` field by Collector or SDK components.
+| <a id="event-name" href="#event-name">`event.name`</a> | string | Identifies the class / type of event. | `browser.mouse.click`; `device.app.lifecycle` | ![Deprecated](https://img.shields.io/badge/-deprecated-red)<br>Replaced by EventName top-level field on the LogRecord. |

docs/registry/attributes/event.md

@@ -0,0 +1,17 @@
+groups:
+  - id: registry.event.deprecated
+    type: attribute_group
+    display_name: Event Attributes
+    brief: >
+      Attributes for Events represented using Log Records.
+    attributes:
+      - id: event.name
+        type: string
+        stability: development
+        deprecated:
+          reason: uncategorized
+          note: >
+            Replaced by EventName top-level field on the LogRecord.
+        brief: >
+          Identifies the class / type of event.
+        examples: ["browser.mouse.click", "device.app.lifecycle"]