insights: remove duplicate change log entry

CHANGELOG.md

@@ -38,7 +38,6 @@ All notable changes to Sourcegraph are documented in this file.
 - Enforce 5-changeset limit for batch changes run server-side on an unlicensed instance. [#37834](https://github.com/sourcegraph/sourcegraph/issues/37834)
 - Changesets that are not associated with any batch changes can have a retention period set using the site configuration `batchChanges.changesetsRetention`. [#36188](https://github.com/sourcegraph/sourcegraph/pull/36188)
 - Added experimental support for exporting traces to an OpenTelemetry collector with `"observability.tracing": { "type": "opentelemetry" }` [#37984](https://github.com/sourcegraph/sourcegraph/pull/37984)
-- Code Insights over some repos now get 12 historic data points in addition to a current daily value and future points that align with the defined interval. [#37756](https://github.com/sourcegraph/sourcegraph/pull/37756)
 - Added `ROCKSKIP_MIN_REPO_SIZE_MB` to automatically use [Rockskip](https://docs.sourcegraph.com/code_intelligence/explanations/rockskip) for repositories over a certain size. [#38192](https://github.com/sourcegraph/sourcegraph/pull/38192)
 - `"observability.tracing": { "urlTemplate": "..." }` can now be set to configure generated trace URLs (for example those generated via `&trace=1`). [#39765](https://github.com/sourcegraph/sourcegraph/pull/39765)