fix, docs: changelog was wrong for 2.4.5

Author: gadomski

CHANGES.md

@@ -16,12 +16,6 @@
 
 * Default branch to **main** ([#544](https://github.com/stac-utils/stac-fastapi/pull/544))
 
-### Removed
-
-* Backends ([#555](https://github.com/stac-utils/stac-fastapi/pull/555))
-  * **stac-fastapi-pgstac**: <https://github.com/stac-utils/stac-fastapi-pgstac>
-  * **stac-fastapi-sqlalchemy**: <https://github.com/stac-utils/stac-fastapi-sqlalchemy>
-
 ### Fixed
 
 * Use `V()` instead of f-strings for pgstac queries ([#554](https://github.com/stac-utils/stac-fastapi/pull/554))