Remove duplicate line in release notes

JeroenDeDauw · JeroenDeDauw · commit ddd0fb5c429c · 2018-08-02T10:52:20.000+02:00
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
@@ -2,8 +2,6 @@
 
 ## Version 8.0.0 (dev)
 
-This release removes integers as acceptable entity IDs.
-
 #### Breaking changes
 
 * `Item::setId` and `Property::setId` no longer accept integers
