simplify new launcher

Author: ef4

lib/plugin-launcher.js

@@ -1,4 +1,3 @@
 module.exports = function (params) {
-  let fn = require(params.requireFile)[params.buildUsing];
-  return fn(params.params).plugin;
+  return require(params.requireFile)[params.buildUsing](params.params).plugin;
 };

lib/utils.js

@@ -38,7 +38,6 @@ function convertPlugins(wrappers) {
               requireFile: wrapper.requireFile,
               buildUsing: wrapper.buildUsing,
               params: wrapper.params,
-              type: 'wrapper',
             },
           ];
         }
@@ -49,7 +48,6 @@ function convertPlugins(wrappers) {
               requireFile: wrapper.parallelBabel.requireFile,
               buildUsing: wrapper.parallelBabel.buildUsing,
               params: wrapper.parallelBabel.params,
-              type: 'plugin',
             },
           ];
         }