update change log

Author: muzahidul-opti

CHANGELOG.md

@@ -7,7 +7,6 @@ December 5, 2023
 * Remove redundant post request body in upload task. ([#521](https://github.com/optimizely/swift-sdk/pull/521/)).
 
 ### Enhancement
-* Add privacy manifest file ([#522](https://github.com/optimizely/swift-sdk/pull/522/)).
 * Handle duplicate keys in experiment ([#523](https://github.com/optimizely/swift-sdk/pull/523/)).
 
 ## 3.10.2