fix duplication in changelog.md

CHANGELOG.md

@@ -12,7 +12,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Improved the icon of the _View Holding_ menu item in the activities table
 - Ensured atomic data replacement during historical market data gathering
 - Refreshed the cryptocurrencies list
-- Ensured atomic data replacement during historical market data gathering
 - Upgraded `ng-extract-i18n-merge` from version `3.0.0` to `3.1.0`
 
 ## 2.213.0 - 2025-10-30

apps/api/src/services/market-data/market-data.service.ts

@@ -144,7 +144,6 @@ export class MarketDataService {
   }: AssetProfileIdentifier & { data: Prisma.MarketDataUpdateInput[] }) {
     await this.prismaService.$transaction(async (prisma) => {
       if (data.length > 0) {
-        // Find the earliest and latest dates in the incoming data using a single loop
         let minTime = Infinity;
         let maxTime = -Infinity;