Prune changelogs after 7.17.13 release

docs/changelog/98260.yaml

@@ -1,5 +0,0 @@
-pr: 98260
-summary: Avoid lifecycle NPE in the data stream lifecycle usage API
-area: Data streams
-type: bug
-issues: []

docs/changelog/98765.yaml

@@ -1,6 +0,0 @@
-pr: 98765
-summary: Fix mvt error when returning partial results
-area: Geo
-type: bug
-issues:
- - 98730