Revert "Release notes for 9.0.7 (#18158) (#18177)" (#18191)

This reverts commit 68cd0d4.

Author: donoghuc

docs/release-notes/index.md

@@ -178,31 +178,6 @@ The Elasticsearch Input now provides [support](https://github.com/logstash-plugi
 
 * Call connection check after connect [#61](https://github.com/logstash-plugins/logstash-output-tcp/pull/61)
 
-## 9.0.7 [logstash-9.0.7-release-notes]
-
-### Fixes [logstash-9.0.7-fixes]
-
-* Gauge type metrics, such as current and peak connection counts of Elastic Agent, are now available in the `_node/stats` API response when the `vertices=true` parameter is included. These metrics are particularly useful for monitoring {ls} plugin activity on the {ls} Integration dashboards. [#18089](https://github.com/elastic/logstash/pull/18089)
-* Improve logstash release artifacts file metadata: mtime is preserved when buiilding tar archives. [#18111](https://github.com/elastic/logstash/pull/18111)
-
-### Plugins [logstash-plugin-9.0.7-changes]
-
-**Beats Input - 7.0.3**
-
-* Upgrade netty 4.1.126 [#517](https://github.com/logstash-plugins/logstash-input-beats/pull/517)
-
-**Http Input - 4.1.3**
-
-* Upgrade netty to 4.1.126 [#198](https://github.com/logstash-plugins/logstash-input-http/pull/198)
-
-**Tcp Input - 7.0.3**
-
-* Upgrade netty to 4.1.126 [#235](https://github.com/logstash-plugins/logstash-input-tcp/pull/235)
-
-**Kafka Integration - 11.6.4**
-
-* Display exception chain comes from kafka client [#200](https://github.com/logstash-plugins/logstash-integration-kafka/pull/200)
-
 ## 9.0.6 [logstash-9.0.6-release-notes]
 
 ### Features and enhancements [logstash-9.0.6-features-enhancements]