Fix nosnap build

TBR=rossberg@chromium.org

Review URL: https://codereview.chromium.org/762083002

Cr-Commit-Position: refs/heads/master@{#25557}

src/messages.js

@@ -182,7 +182,6 @@ var kMessages = {
   prototype_parent_not_an_object: ["Class extends value does not have valid prototype property ", "%0"],
   duplicate_constructor:         ["A class may only have one constructor"],
   sloppy_lexical:                ["Block-scoped declarations (let, const, function, class) not yet supported outside strict mode"],
-  super_constructor_call:        ["'super(...)' constructor call is currently only supported if it is the first statement of a constructor and its arguments do not access 'this'"],
   super_constructor_call:        ["A 'super' constructor call may only appear as the first statement of a function, and its arguments may not access 'this'. Other forms are not yet supported."]
 };