fix changelog

Author: timfel

CHANGELOG.md

@@ -6,18 +6,10 @@ language runtime. The main focus is on user-observable behavior of the engine.
 ## Version 21.1.0
 
 * Added SSL/TLS support (the `ssl` module)
-
-## Version 21.1.0
-
 * Added subclassing of Java classes in JVM mode
 * Use native posix functions in the GraalPython Launcher
 * Support iterating over Python objects from Java and other languages as well as iterating over foreign objects in Python
-* Support catching foreign exceptions in catch-all except clauses
-
-## Version 21.1.0
-
 * Support catching exceptions from other languages or Java with catch-all except blocks
-* Support iterating over iterables from other languages, as well as allow other languages to iterate over Python iterables and iterators
 * Support isinstance and issubclass with instances and classes of other languages
 
 ## Version 21.0.0