reverted fs.move change

lib/move.js

@@ -14,15 +14,6 @@ function mv(source, dest, options, callback){
     options = {}
   }
 
-  source = path.normalize(source)
-  dest = path.normalize(dest)
-
-  var diff = path.relative(source, dest)
-  if (diff !== '' && diff.indexOf('..')) {
-    var err = new Error("Can't move source into dest if dest is in source.")
-    return callback(err)
-  }
-
   var shouldMkdirp = !!options.mkdirp
   var clobber = options.clobber !== false
   var limit = options.limit || 16

test/move.test.js

@@ -149,7 +149,7 @@ describe("move", function() {
     })
   })
 
-  describe('> when trying to a move a folder into itself', function() {
+  describe.skip('> when trying to a move a folder into itself', function() {
     it('should produce an error', function(done) {
       var SRC_DIR = path.join(TEST_DIR, 'test')
       var DEST_DIR = path.join(TEST_DIR, 'test', 'test')