Update CHANGELOG.md

Remote duplicated content

Author: isc-tleavitt

CHANGELOG.md

@@ -19,8 +19,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Avoid delay/errors in loading interop JS when there is a URL prefix (e.g., instance name in multi-instance webserver configuration)
 - Added proper JS escaping in sync output
 - Added support to switch branch in basic mode from menu (#451)
-- Avoid delay/errors in loading interop JS when there is a URL prefix (e.g., instance name in multi-instance webserver configuration)
-- Added proper JS escaping in sync output
 - Pull event handler will not fail when change set includes unmapped files (#453)
 - Pull event handler will attempt compile even if there are failures to load (#457)
 - Improved logging in preview and when errors occur via WebSocket commands (#467)