Revert "Add changelog entry"

This reverts commit e28d75e.

Author: nojaf

CHANGELOG.md

@@ -27,10 +27,6 @@
 
 - Remove `@return(undefined_to_opt)` and `%undefined_to_opt` primitive. https://github.com/rescript-lang/rescript/pull/7462
 
-#### :boom: Breaking Change
-
-- Remove `String.getSymbol`, `String.getSymbolUnsafe` and `String.setSymbol`. https://github.com/rescript-lang/rescript/pull/7571
-
 # 12.0.0-alpha.14
 
 #### :boom: Breaking Change