Update CHANGELOG.md

Author: prvashisht

CHANGELOG.md

@@ -1,13 +1,5 @@
 # Changelog
 
-- `v4.0`
-  - feat: Update LinkedIn signature with profile name
-  - Allow separate signatures for messages and connection requests
-  - Improved popup UI with multiple changes
-- `v3.4`
-  - feat: Update LinkedIn signature with profile name
-  - Allow separate signatures for messages and connection requests
-  - Improved popup UI with multiple changes
 - `v3.3`
   - Fix: Connection note used to get reset when focus was lost
   - Feature: Added the extension icon to toggle the signature from the message form itself