Remove changelog entry for part-of in 1.23.
Review-Url: https://codereview.chromium.org/2827433007 .
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f0e3f7..5a5879c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,13 +1,5 @@
## 1.23.0
-### Language
-* Allow using URI strings in `part of` declarations to refer to the
- importing library.
- A library part now can declare its library either as:
- `part of name.of.library;` or as `part of "uriReferenceOfLibrary.dart";`.
- This allows libraries with no library declarations (and therefore no name)
- to have parts, and it allows tools to easily find the library of a part file.
-
#### Strong Mode
* Breaking change - it is now a strong mode error if a mixin causes a name
