Fix CHANGELOG

Author: dianaafanador3

CHANGELOG.md

@@ -4,9 +4,6 @@ x.y.z Release notes (yyyy-MM-dd)
 * None.
 
 ### Fixed
-* <How to hit and notice issue? what was the impact?> ([#????](https://github.com/realm/realm-swift/issues/????), since v?.?.?)
-* None.
-* Copy EmbeddedObject for embedded object property on initializing unmanaged object ([#6921](https://github.com/realm/realm-cocoa/issues/6921)
 * Copying an embedded object to an unmanaged object will not throw ([#6921](https://github.com/realm/realm-cocoa/issues/6921)
 
 <!-- ### Breaking Changes - ONLY INCLUDE FOR NEW MAJOR version -->