Don't use "arrays" in lib/compiler/passes/generate-bytecode.js

The "arrays" module will be removed.

See #442.

lib/compiler/passes/generate-bytecode.js

@@ -1,7 +1,6 @@
 "use strict";
 
-let arrays  = require("../../utils/arrays"),
-    objects = require("../../utils/objects"),
+let objects = require("../../utils/objects"),
     asts    = require("../asts"),
     visitor = require("../visitor"),
     op      = require("../opcodes"),
@@ -194,7 +193,7 @@ function generateBytecode(ast) {
   let consts = [];
 
   function addConst(value) {
-    let index = arrays.indexOf(consts, value);
+    let index = consts.indexOf(value);
 
     return index === -1 ? consts.push(value) - 1 : index;
   }