Remove unused FFI implementation

Author: garyb

src/Data/Array.js

@@ -19,15 +19,6 @@ exports.range = function (start) {
   };
 };
 
-exports.replicate = function (n) {
-  return function (v) {
-    if (n < 1) return [];
-    var r = new Array(n);
-    for (var i = 0; i < n; i++) r[i] = v;
-    return r;
-  };
-};
-
 exports.fromFoldableImpl = (function () {
   // jshint maxparams: 2
   function Cons(head, tail) {