remove redundant test

packages/babel-plugin-transform-es2015-classes/test/fixtures/regression/2663-2/actual.js

@@ -1,6 +0,0 @@
-import React from 'react'
-export default class Button extends React.Component {
-  render() {
-    return <button>foo</button>
-  }
-}

packages/babel-plugin-transform-es2015-classes/test/fixtures/regression/2663-2/expected.js

@@ -1,32 +0,0 @@
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-
-var _react = require('react');
-
-var _react2 = babelHelpers.interopRequireDefault(_react);
-
-var Button = (function (_React$Component) {
-  babelHelpers.inherits(Button, _React$Component);
-
-  function Button() {
-    babelHelpers.classCallCheck(this, Button);
-    return babelHelpers.possibleConstructorReturn(this, Object.getPrototypeOf(Button).apply(this, arguments));
-  }
-
-  babelHelpers.createClass(Button, [{
-    key: 'render',
-    value: function render() {
-      return _react2.default.createElement(
-        'button',
-        null,
-        'foo'
-      );
-    }
-  }]);
-  return Button;
-})(_react2.default.Component);
-
-exports.default = Button;

packages/babel-plugin-transform-es2015-classes/test/fixtures/regression/2663-2/options.json

@@ -1,3 +0,0 @@
-{
-  "plugins": ["transform-class-properties", "external-helpers-2"]
-}