Removes release date and specifies no deprecations for 9.0.0 (#16631)

Co-authored-by: Colleen McGinnis <colleen.mcginnis@elastic.co>

Author: KOTungseth

docs/release-notes/breaking-changes.md

@@ -9,7 +9,6 @@ mapped_pages:
 Breaking changes can impact your Elastic applications, potentially disrupting normal operations. Before you upgrade, carefully review the Elastic APM breaking changes and take the necessary steps to mitigate any issues. To learn how to upgrade, check [Upgrade](docs-content://deploy-manage/upgrade.md).
 
 % ## Next version [next-version]
-% **Release date:** Month day, year
 
 % ::::{dropdown} Title of breaking change
 % Description of the breaking change.
@@ -21,7 +20,6 @@ Breaking changes can impact your Elastic applications, potentially disrupting no
 % ::::
 
 ## 9.0.0 [9-0-0]
-**Release date:** April 2, 2025
 
 ::::{dropdown} Change server information endpoint "/" to only accept GET and HEAD requests
 This will surface any agent misconfiguration causing data to be sent to `/` instead of the correct endpoint (for example, `/v1/traces` for OTLP/HTTP).

docs/release-notes/deprecations.md

@@ -8,7 +8,6 @@ Over time, certain Elastic functionality becomes outdated and is replaced or rem
 Review the deprecated functionality for Elastic APM. While deprecations have no immediate impact, we strongly encourage you update your implementation after you upgrade. To learn how to upgrade, check out [Upgrade](docs-content://deploy-manage/upgrade.md).
 
 % ## Next version [next-version]
-% **Release date:** Month day, year
 
 % ::::{dropdown} Deprecation title
 % Description of the deprecation.
@@ -18,11 +17,5 @@ Review the deprecated functionality for Elastic APM. While deprecations have no
 % ::::
 
 % ## 9.0.0 [9-0-0]
-% **Release date:** April 2, 2025
 
-% ::::{dropdown} Deprecation title
-% Description of the deprecation.
-% For more information, check [PR #](PR link).
-% **Impact**<br> Impact of deprecation.
-% **Action**<br> Steps for mitigating deprecation impact.
-% ::::
+_No deprecations_

docs/release-notes/index.md

@@ -15,14 +15,12 @@ To check for security updates, go to [Security announcements for the Elastic sta
 % For each new version section, include the Elastic APM and Kibana changes.
 
 % ## version.next [elastic-apm-next-release-notes]
-% **Release date:** Month day, year
 
 % ### Features and enhancements [elastic-apm-next-features-enhancements]
 
 % ### Fixes [elastic-apm-next-fixes]
 
 ## 9.0.0 [9-0-0]
-**Release date:** April 2, 2025
 
 ### Features and enhancements [9-0-0-features-enhancements]