Codefix to remove unreachable enum is wrong

TypeScript Version: 3.0.0-dev.20180712

Code

function f() {
    return E.A;
    enum E { A }
}

Expected behavior:

No codefix, or codefix to move E out of the function.

Actual behavior:

Codefix removes E.

Note that for a const enum with "preserveConstEnums": true, there is no error about the enum being used before its declaration.