Prune changelogs after 8.2.2 release

docs/changelog/86732.yaml

@@ -1,5 +0,0 @@
-pr: 86732
-summary: Fix audit logging to consistently include port number in `origin.address`
-area: Audit
-type: bug
-issues: []

docs/changelog/86990.yaml

@@ -1,5 +0,0 @@
-pr: 86990
-summary: Adjust osprobe assertion for burst cpu
-area: Infra/Core
-type: bug
-issues: []

docs/changelog/87013.yaml

@@ -1,6 +0,0 @@
-pr: 87013
-summary: Make sure to rewrite explain query on coordinator
-area: Search
-type: bug
-issues:
- - 64281

docs/changelog/87023.yaml

@@ -1,6 +0,0 @@
-pr: 87023
-summary: Fix ML task auditor exception early in cluster lifecycle
-area: Machine Learning
-type: bug
-issues:
- - 87002

docs/changelog/87051.yaml

@@ -1,5 +0,0 @@
-pr: 87051
-summary: Guard for adding null value tags to vector tiles
-area: Geo
-type: bug
-issues: []

docs/changelog/87076.yaml

@@ -1,7 +0,0 @@
-pr: 87076
-summary: Prevent invalid datastream metadata when CCR follows a datastream with
-  closed indices on the follower
-area: "CCR"
-type: bug
-issues:
- - 87048