diff --git a/src/com/google/javascript/jscomp/DefaultPassConfig.java b/src/com/google/javascript/jscomp/DefaultPassConfig.java
index <HASH>..<HASH> 100644
--- a/src/com/google/javascript/jscomp/DefaultPassConfig.java
+++ b/src/com/google/javascript/jscomp/DefaultPassConfig.java
@@ -2886,11 +2886,6 @@ public final class DefaultPassConfig extends PassConfig {
         protected CompilerPass create(AbstractCompiler compiler) {
           return new FunctionRewriter(compiler);
         }
-
-        @Override
-        protected FeatureSet featureSet() {
-          return FeatureSet.latest();
-        }
       };
 
   /** Collapses functions to not use the VAR keyword. */
Automated rollback.

*** Original change description ***

Enable rewriteFunctionExpressions for ES6 output.

***

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Created by MOE: <URL>