undo nginx_ingress_controller_otel changes

Author: mykola-elastic

packages/nginx_ingress_controller_otel/changelog.yml

@@ -1,9 +1,4 @@
 # newer versions go on top
-- version: "0.3.0"
-  changes:
-    - description: Add `discovery` field to support auto-install
-      type: enhancement
-      link: https://github.com/elastic/integrations/pull/15664
 - version: "0.2.2"
   changes:
     - description: Add `opentelemetry` category

packages/nginx_ingress_controller_otel/manifest.yml

@@ -1,7 +1,7 @@
 format_version: 3.5.0
 name: nginx_ingress_controller_otel
 title: Nginx Ingress Controller OpenTelemetry Logs
-version: 0.3.0
+version: 0.2.2
 source:
   license: "Elastic-2.0"
 description: Collect Nginx Ingress Controller logs using the OpenTelemetry collector.
@@ -13,13 +13,9 @@ categories:
   - opentelemetry
 conditions:
   kibana:
-    version: "^9.2.0"
+    version: "^8.16.0 || ^9.0.0"
   elastic:
     subscription: "basic"
-discovery:
-  datasets:
-    - name: nginx_ingress_controller.access.otel
-    - name: nginx_ingress_controller.error.otel
 screenshots:
   - src: /img/nginx-ingress-controller-overview.png
     title: Overview dashboard