Updated the files.

my-app/node_modules/less/test/plugins/visitor/index.js

@@ -0,0 +1,24 @@
+(function(exports) {
+    var RemoveProperty = function(less) {
+        this._visitor = new less.visitors.Visitor(this);
+    };
+
+    RemoveProperty.prototype = {
+        isReplacing: true,
+        run: function (root) {
+            return this._visitor.visit(root);
+        },
+        visitDeclaration: function (ruleNode, visitArgs) {
+            if (ruleNode.name != '-some-aribitrary-property') {
+                return ruleNode;
+            } else {
+                return [];
+            }
+        }
+    };
+
+    exports.install = function(less, pluginManager) {
+        pluginManager.addVisitor( new RemoveProperty(less));
+    };
+
+})(typeof exports === 'undefined' ? this['VisitorPlugin'] = {} : exports);