shorten changelog entry

Author: adinauer

CHANGELOG.md

@@ -6,7 +6,6 @@
 
 - Discard envelopes on `4xx` and `5xx` response ([#4950](https://github.com/getsentry/sentry-java/pull/4950))
   - This aims to not overwhelm Sentry after an outage or load shedding (including HTTP 429) where too many events are sent at once
-  - We also do not have to re-send on a `4xx` since that's likely an SDK (e.g. wrong serialization) or envelope problem (e.g. too large) and sending it again won't change the result
 
 
 ## 8.29.0